sexta-feira, 23 de outubro de 2015

Toxins remain in your clothes

 

 

In a new thesis 60 garments from Swedish and international clothing chains have been tested. An initial analysis found thousands of chemicals in the clothes and around a hundred chemicals were preliminary identified.

Credit: Image courtesy of Stockholm University

Thousands of chemicals are used in clothes manufacturing. Researchers at Stockholm University have examined if there are chemicals in the clothes we buy as well. Several substances related to health risks were identified and not even organic cotton was a guarantee for non-toxic textiles.

In a new thesis 60 garments from Swedish and international clothing chains have been tested. An initial analysis found thousands of chemicals in the clothes and around a hundred chemicals were preliminary identified. Several of the substances were not on the producers' lists and are suspected to be by-products, residues or chemicals added during transport.

"Exposure to these chemicals increases the risk of allergic dermatitis, but more severe health effect for humans as well as the environment could possibly be related to these chemicals. Some of them are suspected or proved carcinogens and some have aquatic toxicity," says Giovanna Luongo, PhD in Analytical Chemistry at Stockholm University.

Depending on occurrence, quantity, toxicity and how easily they may penetrate the skin, four groups of substances were chosen for further analysis. The highest concentrations of two of these, quinolines and aromatic amines, were found in polyester. Cotton contained high concentrations of benzothiazoles, even clothes made from organic cotton.

The researchers washed the clothes and then measured the levels of chemicals. Some of the substances were washed off, with a risk of ending up in aquatic environments. Others remained to a high degree in the clothes, becoming a potential source of long-term dermal exposure. It is difficult to know if the levels of these harmful substances are hazardous, and what effects chemicals in our clothes can have in the long run.

"We have only scratched the surface, this is something that has to be dealt with. Clothes are worn day and night during our entire life. We must find out if textile chemicals go into our skin and what it means to our health. It is very difficult to assess and requires considerably more research," says Conny Östman, Professor in Analytical Chemistry.

The thesis can be found online at: http://www.diva-portal.org/smash/get/diva2:850089/FULLTEXT02.pdf


Story Source:

The above post is reprinted from materials provided by Stockholm University.Note: Materials may be edited for content and length.


 

http://www.sciencedaily.com/releases/2015/10/151023084508.htm

Abandoned castel

 

abandonedcastel0-900x600

abandonedcastel1-900x506

abandonedcastel2-900x1350

abandonedcastel3-900x1350

abandonedcastel5-900x629

abandonedcastel7-900x600

abandonedcastel8-900x623

Treating pulmonary diseases using Alaska pollock gelatin

 

 

The newly developed sealant that was applied over a 3-mm-diameter hole in a porcine blood vessel.

Credit: Image courtesy of National Institute for Materials Science (NIMS)

In recent years, patients with pulmonary emphysema have been increasing mainly among middle-aged and elderly males due to aging and excessive smoking. Emphysema makes brittle lungs, and in severe cases, holes develop in the lung tissue, causing air leakage. Researchers at NIMS developed a new sealant to close holes developed in lungs and blood vessels using Alaska pollock gelatin. In the paper published in the Journal of Biomedical Nanotechnology, they reported that the sealant is about 12 times stronger than conventional sealants and is able to resist pressure as high as approximately 2.8 times the normal blood pressure.

Furthermore, the researchers explain that the advantage of the sealant is its property of remaining liquid at room temperature as it contains gelatin extracted from Alaska pollock, which is a cold-water fish. "The sealant doesn't have to be preheated before surgery, and it can be sprayed directly on an open wound after mixing it with a crosslinking agent. Because it possesses extremely high bonding strength and elasticity, and it slowly breaks down in the body after surgery, it has the potential to be used as a sealant for any organ."

Currently, fibrin sealants, which contain blood-derived components, are mostly used as supplementary materials to seal holes developed in blood vessels and organs. However, their bonding strengths are lower than normal blood pressure and thus are inadequate, and their wet tissue adhesion is particularly weak.

To resolve this issue, the research group led by Tetsushi Taguchi, who belongs to the MANA (International Center for Materials Nanoarchitectonics) Biomaterials Unit, had been developing a sealant using pig-derived gelatin. Taguchi explains that the key approach to increasing sealants' bonding strength is the creation and use of hydrophobically-modified gelatin. "When gelatin is chemically modified with hydrophobic group, the hydrophobic group partially penetrates tissue in the manner in which a ship anchors itself to the seabed. Consequently, the use of hydrophobically-modified gelatin will improve sealants' adhesion to biological tissues." However, sealants using pig-derived gelatin still had a disadvantage: they need to be liquefied by heating before their use in surgery operation, since they become gelatinous when they are exposed to low temperatures or condensed.

To deal with this issue, Taguchi shifted his attention to Alaska pollock gelatin as it maintains liquidity even when it is exposed to low temperatures or condensed. "Because Alaska pollock is cold-water fish, Alaska pollock gelatin transforms between solid and liquid states at 13.8°C. In other words, this gelatin always takes a liquid form at room temperature. We have developed a new sealant by chemically modifying this gelatin with a hydrophobic cholesteryl group, which was considered to be an excellent tissue sealant, and mixing it with a polyethylene glycol-based crosslinking agent, which had already been in clinical use." To verify the bonding strength of this new sealant, his team made 3-mm-diameter holes in fresh porcine blood vessels under wet conditions and applied the sealant to the holes. The test demonstrated that the pressure resistance strength of the sealant was 341 mmHg. This value indicates that the sealant is highly pressure resistant as it is about 12 times stronger than currently available fibrin sealants (29 mmHg), and the value is about 2.8 times greater than the normal maximum blood pressure for healthy people (approx. 120 mmHg).

This sealant is highly biocompatible given that it is digested by enzymes in the body within eight weeks. In addition, due to its high elasticity, it is expected to have high demand in various surgical and internal medicine fields such as cardiovascular surgery and the treatment of pulmonary emphysema.

Taguchi is currently collecting basic data with the goal of conducting clinical studies in five years in coordination with the Department of Thorasic Surgery, University of Tsukuba. He says, "We wish to make contribution to medical advancement by developing outstanding materials for medical workers. To achieve that, we need to know the real needs and concerns of medical workers. Without taking this information into account, our efforts to integrate advanced science and technology into the development of new materials would be wasted. To ensure our effort to be productive and to develop truly useful materials, it is vital for us to listen to the opinions of medical workers in person."


Story Source:

The above post is reprinted from materials provided by National Institute for Materials Science (NIMS). Note: Materials may be edited for content and length.


Journal Reference:

  1. Tetsushi Taguchi, Ryo Mizuta, Temmei Ito, Keiko Yoshizawa, Mikio Kajiyama. Robust Sealing of Blood Vessels with Cholesteryl Group-Modified, Alaska Pollock-Derived Gelatin-Based Biodegradable Sealant Under Wet Conditions. Journal of Biomedical Nanotechnology, 2016; 12 (1): 128 DOI: 10.1166/jbn.2016.2210

 

http://www.sciencedaily.com/releases/2015/10/151023084500.htm

Distraction rated 'high' for most devices while driving

 

 

A University of Utah research assistant introduces a participant in new distracted driving studies to special devices designed to gauge mental distraction during road tests.

Credit: AAA Foundation for Traffic Safety

If you think it is okay to talk to your car infotainment system or smartphone while driving or even when stopped at a red light, think again. It takes up to 27 seconds to regain full attention after issuing voice commands, University of Utah researchers found in a pair of new studies for the AAA Foundation for Traffic Safety.

One of the studies showed that it is highly distracting to use hands-free voice commands to dial phone numbers, call contacts, change music and send texts with Microsoft Cortana, Apple Siri and Google Now smartphone personal assistants, though Google Now was a bit less distracting than the others.

The other study examined voice-dialing, voice-contact calling and music selection using in-vehicle information or "infotainment" systems in 10 model-year 2015 vehicles. Three were rated as moderately distracting, six as highly distracting and the system in the 2015 Mazda 6 as very highly distracting.

"Just because these systems are in the car doesn't mean it's a good idea to use them while you are driving," says University of Utah psychology professor David Strayer, senior author of the two new studies. "They are very distracting, very error prone and very frustrating to use. Far too many people are dying because of distraction on the roadway, and putting another source of distraction at the fingertips of drivers is not a good idea. It's better not to use them when you are driving."

The research also found that, contrary to what some may believe, practice with voice-recognition systems doesn't eliminate distraction. The studies also showed older drivers -- those most likely to buy autos with infotainment systems -- are much more distracted than younger drivers when giving voice commands.

But the most surprising finding was that a driver traveling only 25 mph continues to be distracted for up to 27 seconds after disconnecting from highly distracting phone and car voice-command systems, and up to 15 seconds after disconnecting from the moderately distracting systems.

The 27 seconds means a driver traveling 25 mph would cover the length of three football fields before regaining full attention.

"Most people think, 'I hang up and I'm good to go,'" Strayer says. "But that's just not the case. We see it takes a surprisingly long time to come back to full attention. Even sending a short text message can cause almost another 30 seconds of impaired attention."

"The voice-command technology isn't ready," says Joel Cooper, a University of Utah research assistant professor of psychology and a co-author of the new studies. "It's in the cars and is billed as a safe alternative to manual interactions with your car, but the voice systems simply don't work well enough."

"Many of these systems have been put into cars with a voice-recognition system to control entertainment: Facebook, Twitter, Instagram, Snapchat, Facetime, etc. We now are trying to entertain the driver rather than keep the driver's attention on the road."

In 2013, 3,154 people died and 424,000 others were injured in motor vehicle crashes on U.S. roads involving driver distraction, says the U.S. Department of Transportation.

The new AAA reports urge that voice activated, in-vehicle information systems "ought not to be used indiscriminately" while driving, and advise that "caution is warranted" in smart-phone use while driving.

The studies are fifth and sixth since 2013 by University of Utah psychologists and funded by the AAA Foundation for Traffic Safety. AAA formerly was known as the American Automobile Association. Strayer and Cooper ran the studies with Utah psychology doctoral students Joanna Turrill, James Coleman and Rachel Hopman.

The ratings: In-car systems and smartphone assistants are distracting

The previous Utah-AAA studies devised a five-point scale: 1 mild distraction, 2 moderate distraction, 3 high distraction, 4 very high distraction and 5 maximum distraction. Those studies showed cellphone calls were moderately distracting, with scores of 2.5 for hand-held calls and 2.3 for hands-free calls. Listening to a book on tape rated mild distraction at 1.7. Listening to the radio rated 1.2.

One of the new studies found mild distraction for in-vehicle information systems in the Chevy Equinox with MyLink (2.4), Buick Lacrosse with IntelliLink (2.4) and Toyota 4Runner with Entune (2.9).

High distraction systems were the Ford Taurus with Sync MyFord Touch (3.1), Chevy Malibu with MyLink (3.4), Volkswagen Passat with Car-Net (3.5), Nissan Altima with Nissan Connect (3.7), Chrysler 200c with Uconnect (3.8) and Hyundai Sonata with Blue Link (3.8). The Mazda 6's Connect system rated very highly distracting (4.6).

In some cases, the same voice-command system (like Chevy MyLink) got different distraction scores in different models -- something the researchers speculate is due to varying amounts of road noise and use of different in-vehicle microphones.

The second new study found all three major smartphone personal assistants either highly or very highly distracting. Two scores were given to each voice-based system: A lower number for using voice commands only to make calls or change music when driving -- the same tasks done with the in-car systems -- and a higher number that also included using smartphones to send texts by voice commands.

Google Now rated highly distracting (3.0, 3.3), as did Apple Siri (3.4, 3.7), while Microsoft Cortana rated highly to very highly distracting (3.8, 4.1).

Strayer says of both in-car information systems and smartphone personal assistants: "These systems are often very difficult to use, especially if you're just trying to entertain yourself. ... The vast majority of people we tested ended up being frustrated by the complexity and error-prone nature of the systems."

How the studies were conducted

The new studies were conducted with participants driving the various cars at 25 mph or less around a 2.7-mile route in Salt Lake City's Avenues neighborhood as they used voice-commands to dial numbers, call contacts and tune the radio using in-car systems, and to dial numbers, call contacts, choose music and text using smartphones.

With researchers in the car, the drivers were tested for the extent of their distraction, even as they kept their eyes on the road and hands on the wheel after hitting a voice-command system button. A head-mounted LED light flashed red every three to five seconds at the edge of a driver's left eye. Drivers pressed a switch attached to a thumb when they saw the light. The researchers measured how voice interactions with a car or smartphone reduced drivers' reaction times and accuracy at seeing the flashing lights. The drivers also completed surveys about their perceived level of distraction, and videos measured how much of the time they kept their eyes on the road, mirrors or dashboard.

The in-vehicle information system study included 257 people and the smartphone personal assistant study had 65 participants, all with no at-fault accidents during the past five years. Unlike the 2013 and 2014 studies, which included primarily people in their 20s, subjects in the new studies ranged in age from 21 to 70.

In the in-car information system study, the researchers did an initial test on the subjects, then let them take the cars home for five days to practice using the systems. Then they returned for reassessment of the mental workload from using the systems.

Strayer personally doesn't even make hands-free cellphone calls while driving. He advises against using voice commands system while driving for purposes such as voice dialing, voice contact calling, surfing the Internet, sending email and text messages, reading email, tweeting or updating Facebook.

"If you are going to use these systems, use them to support the primary task of driving -- like for navigation or to change the radio or temperature -- and keep the interaction short."


Story Source:

The above post is reprinted from materials provided by University of Utah.Note: Materials may be edited for content and length.


http://www.sciencedaily.com/releases/2015/10/151022094515.htm

The Future City of Bamboos

 

The Future City of Bamboos

Posted: 22 Oct 2015 12:00 PM PDT

La firme d’architecture Penda a récemment réalisé l’installation Rising Canes à Beijing pendant la Design Week. Cette sculpture s’inscrit au coeur d’un projet bien plus ambitieux, prévu pour 2023 : celui de trouver des solutions pour éviter la congestion des grandes villes. Il s’agirait de construire de hauts immeubles en bambous (comme des tipis avec des branches ficelées), et de créer une petite cité à part entière, au coeur de la ville, tout en respectant l’environnement et le développement durable. Le béton utilisé ne sera là que pour accueillir des plantes provenant de la province chinoise d’Anji (une grande région exportatrice de bambous à échelle internationale). Cet espace urbain devrait être entouré de 250 hectares de nature et pourrait loger 200 000 personnes.

penda-1-900x643

penda-3-900x1228

penda-4-900x1265

penda-5-900x1362

penda-6b-900x1150

penda-7-900x1100

www.fubiz.net

Germany Could Be a Model for How We’ll Get Power in the Future

 

 

The European nation’s energy revolution has made it a leader in replacing nukes and fossil fuels with wind and solar technology.

By Robert Kunzig

Photographs by Luca Locatelli

Published October 15, 2015

Hamburg knew the bombs were coming, and so the prisoners of war and forced laborers had just half a year to build the giant flak bunker. By July 1943 it was finished. A windowless cube of reinforced concrete, with seven-foot-thick walls and an even thicker roof, it towered like a medieval castle above a park near the Elbe River. The guns protruding from its four turrets would sweep Allied bombers from the sky, the Nazis promised, while tens of thousands of citizens sheltered safely behind its impenetrable walls.

Coming in at night from the North Sea just weeks after the bunker was finished, British bombers steered for the spire of St. Nikolai in the center of the city. They dropped clouds of metallic foil strips to throw off German radar and flak gunners. Targeting crowded residential neighborhoods, the bombers ignited an unquenchable firestorm that destroyed half of Hamburg and killed more than 34,000 people. Towering walls of fire created winds so strong that people were blown into the flames. Church bells clanged furiously.

The spire of St. Nikolai, which somehow survived, stands today as a mahnmal—a memorial reminding Germany of the hell brought by the Nazis. The flak bunker is another mahnmal. But now it has a new meaning: An urban development agency (IBA Hamburg) and the municipal utility (Hamburg Energie) have transformed it from a powerful reminder of Germany’s shameful past into a hopeful vision for the future.

In the central space of the bunker, where people once cowered through the firestorm, a six-story, 528,000-gallon hot water tank delivers heat and hot water to some 800 homes in the neighborhood. The water is warmed by burning gas from sewage treatment, by waste heat from a nearby factory, and by solar panels that now cover the roof of the bunker, supported by struts angling from the old gun turrets. The bunker also converts sunlight into electricity; a scaffolding of photovoltaic (PV) panels on its south facade feeds enough juice into the grid to supply a thousand homes. On the north parapet, from which the flak gunners once watched flames rising from the city center, an outdoor café offers a view of the changed skyline. It’s dotted with 17 wind turbines now.

Picture of the windmills in Germany

Wind turbines surround a coal-fired power plant near Garzweiler in western Germany. Renewables now generate 27 percent of the country’s electricity, up from 9 percent a decade ago. Eventually they’ll crowd out coal—although Germany is switching off its nuclear plants first.

Germany is pioneering an epochal transformation it calls the energiewende—an energy revolution that scientists say all nations must one day complete if a climate disaster is to be averted. Among large industrial nations, Germany is a leader. Last year about 27 percent of its electricity came from renewable sources such as wind and solar power, three times what it got a decade ago and more than twice what the United States gets today. The change accelerated after the 2011 meltdown at Japan’s Fukushima nuclear power plant, which led Chancellor Angela Merkel to declare that Germany would shut all 17 of its own reactors by 2022. Nine have been switched off so far, and renewables have more than picked up the slack.

What makes Germany so important to the world, however, is the question of whether it can lead the retreat from fossil fuels. By later this century, scientists say, planet-warming carbon emissions must fall to virtually zero. Germany, the world’s fourth largest economy, has promised some of the most aggressive emission cuts—by 2020, a 40 percent cut from 1990 levels, and by 2050, at least 80 percent.

What makes Germany so important, however, is the question of whether it can lead the retreat from fossil fuels.

The fate of those promises hangs in the balance right now. The German revolution has come from the grass roots: Individual citizens and energygenossenschaften—local citizens associations—have made half the investment in renewables. But conventional utilities, which didn’t see the revolution coming, are pressuring Merkel’s government to slow things down. The country still gets far more electricity from coal than from renewables. And the energiewende has an even longer way to go in the transportation and heating sectors, which together emit more carbon dioxide (CO₂) than power plants.

German politicians sometimes compare the energiewende to the Apollo moon landing. But that feat took less than a decade, and most Americans just watched it on TV. The energiewende will take much longer and will involve every single German—more than 1.5 million of them, nearly 2 percent of the population, are selling electricity to the grid right now. “It’s a project for a generation; it’s going to take till 2040 or 2050, and it’s hard,” said Gerd Rosenkranz, a former journalist at Der Spiegel who’s now an analyst at Agora Energiewende, a Berlin think tank. “It’s making electricity more expensive for individual consumers. And still, if you ask people in a poll, Do you want the energiewende? then 90 percent say yes.”

Why? I wondered as I traveled in Germany last spring. Why is the energy future happening here, in a country that was a bombed-out wasteland 70 years ago? And could it happen everywhere?

The Germans have an origin myth: It says they came from the dark and impenetrable heart of the forest. It dates back to the Roman historian Tacitus, who wrote about the Teutonic hordes who massacred Roman legions, and it was embellished by German Romantics in the 19th century. Through the upheavals of the 20th century, according to ethnographer Albrecht Lehmann, the myth remained a stable source of German identity. The forest became the place where Germans go to restore their souls—a habit that predisposed them to care about the environment.

So in the late 1970s, when fossil fuel emissions were blamed for killing German forests with acid rain, the outrage was nationwide. The oil embargo of 1973 had already made Germans, who have very little oil and gas of their own, think about energy. The threat of waldsterben, or forest death, made them think harder.

Picture of an abandoned nuclear facility in Germany

Picture of a man dismantling a nuclear facility in Germany

Workers have been taking apart this Soviet-era nuclear power plant, near Greifswald in eastern Germany, since 1995, cleaning radioactive surfaces with steel grit so the metal can be recycled. Germany plans to shut all its reactors by 2022.

Government and utilities were pushing nuclear power—but many Germans were pushing back. This was new for them. In the decades after World War II, with a ruined country to rebuild, there had been little appetite for questioning authority or the past. But by the 1970s, the rebuilding was complete, and a new generation was beginning to question the one that had started and lost the war. “There’s a certain rebelliousness that’s a result of the Second World War,” a 50-something man named Josef Pesch told me. “You don’t blindly accept authority.”

Pesch was sitting in a mountaintop restaurant in the Black Forest outside Freiburg. In a snowy clearing just uphill stood two 320-foot-tall wind turbines funded by 521 citizen investors recruited by Pesch—but we weren’t talking about the turbines yet. With an engineer named Dieter Seifried, we were talking about the nuclear reactor that never got built, near the village of Wyhl, 20 miles away on the Rhine River.

The state government had insisted that the reactor had to be built or the lights would go out in Freiburg. But beginning in 1975, local farmers and students occupied the site. In protests that lasted nearly a decade, they forced the government to abandon its plans. It was the first time a nuclear reactor had been stopped in Germany.

The lights didn’t go out, and Freiburg became a solar city. Its branch of the Fraunhofer Institute is a world leader in solar research. Its Solar Settlement, designed by local architect Rolf Disch, who’d been active in the Wyhl protests, includes 50 houses that all produce more energy than they consume. “Wyhl was the starting point,” Seifried said. In 1980 an institute that Seifried co-founded published a study called Energiewende—giving a name to a movement that hadn’t even been born yet.

Picture of a dismantled nuclear facility turned into a theme park in Germany

A nuclear reactor at Kalkar was finished just before the 1986 explosion at Chernobyl, Ukraine—and never used. It’s now an amusement park with a ride in what would have been the cooling tower. Fear of nuclear power spurred Germany’s transition.

It wasn’t born of a single fight. But opposition to nuclear power, at a time when few people were talking about climate change, was clearly a decisive factor. I had come to Germany thinking the Germans were foolish to abandon a carbon-free energy source that, until Fukushima, produced a quarter of their electricity. I came away thinking there would have been no energiewende at all without antinuclear sentiment—the fear of meltdown is a much more powerful and immediate motive than the fear of slowly rising temperatures and seas.

All over Germany I heard the same story. From Disch, sitting in his own cylindrical house, which rotates to follow the sun like a sunflower. From Rosenkranz in Berlin, who back in 1980 left physics graduate school for months to occupy the site of a proposed nuclear waste repository. From Luise Neumann-Cosel, who occupied the same site two decades later—and who is now leading a citizens’ initiative to buy the Berlin electric grid. And from Wendelin Einsiedler, a Bavarian dairy farmer who has helped transform his village into a green dynamo.

All of them said Germany had to get off nuclear power and fossil fuels at the same time. “You can’t drive out the devil with Beelzebub,” explained Hans-Josef Fell, a prominent Green Party politician. “Both have to go.” At the University of Applied Sciences in Berlin, energy researcher Volker Quaschning put it this way: “Nuclear power affects me personally. Climate change affects my kids. That’s the difference.”

Germany has Europe’s second highest consumer electricity prices, yet public support for its energiewende—an aggressive transition to renewable energy—is at an impressive 92 percent. The support is rooted in an eco-friendly culture, a collective desire to abandon nuclear energy, and laws that allow citizens to profit from selling their energy to the grid. Roughly 27 percent of Germany’s electricity is from renewables; the goal is at least 80 percent by 2050.

Map of Power Generation in Germany, 2014

**Reactor closed prior to 2011

Map of Power Generation in Germany, 2050

Renewables as share of electricty generation

Total emissions (CO2 equivalent), 1990-2012

*Latest available data

If you ask why antinuclear sentiment has been so much more consequential in Germany than, say, across the Rhine in France, which still gets 75 percent of its electricity from nukes, you end up back at the war. It left Germany a divided country, the front along which two nuclear superpowers faced off. Demonstrators in the 1970s and ’80s were protesting not just nuclear reactors but plans to deploy American nuclear missiles in West Germany. The two didn’t seem separable. When the German Green Party was founded in 1980, pacifism and opposition to nuclear power were both central tenets.

In 1983 the first Green representatives made it into the Bundestag, the national parliament, and started injecting green ideas into the political mainstream. When the Soviet reactor at Chernobyl exploded in 1986, the left-leaning Social Democrats (SPD), one of Germany’s two major parties, was converted to the antinuclear cause. Even though Chernobyl was hundreds of miles away, its radioactive cloud passed over Germany, and parents were urged to keep their children inside. It’s still not always safe to eat mushrooms or wild boar from the Black Forest, Pesch said. Chernobyl was a watershed.

But it took Fukushima, 25 years later, to convince Merkel and her Christian Democratic Union (CDU) that all nuclear reactors should be switched off by 2022. By then the boom of renewable energy was in full swing. And a law that Hans-Josef Fell had helped create back in 2000 was the main reason.

Fell’s house in Hammelburg, the town in northern Bavaria where he was born and raised, is easy to spot among all the pale postwar stucco: It’s the one built of dark larch wood, with a grass roof. On the south side, facing the backyard, the grass is partially covered by photovoltaic and solar hot water panels. When there’s not enough sun to produce electricity or heat, a cogenerator in the basement burns sunflower or rapeseed oil to produce both. On the March morning when I visited, the wood interior of the house was bathed in sunlight and warmth from the conservatory. In a few weeks, Fell said, wildflowers would be blooming on the roof.

A tall man in jeans and Birkenstocks, with a bald, egg-shaped head and a fringe of gray beard, Fell has moments of sounding like a preacher—but he’s no green ascetic. A shed in his backyard, next to the swimming pond, houses a sauna, powered by the same green electricity that powers his house and his car. “The environmental movement’s biggest mistake has been to say, ‘Do less. Tighten your belts. Consume less,’ ” Fell said. “People associate that with a lower quality of life. ‘Do things differently, with cheap, renewable electricity’—that’s the message.”

See how German citizens are preparing for more renewable energy industries.

From Fell’s garden, on a clear day, you used to be able to see the white steam plumes of the nuclear reactor at Grafenrheinfeld. His father, the conservative mayor of Hammelburg, supported nuclear power and the local military base. Young Fell demonstrated at Grafenrheinfeld and went to court to refuse military service. Years later, after his father had retired, Fell was elected to the Hammelburg city council.

It was 1990, the year Germany was officially reunified—and while the country was preoccupied with that monumental task, a bill boosting the energiewende made its way through the Bundestag without much public notice. Just two pages long, it enshrined a crucial principle: Producers of renewable electricity had the right to feed into the grid, and utilities had to pay them a “feed-in tariff.” Wind turbines began to sprout in the windy north.

But Fell, who was installing PV panels on his roof in Hammelburg, realized that the new law would never lead to a countrywide boom: It paid people to produce energy, but not enough. In 1993 he got the city council to pass an ordinance obliging the municipal utility to guarantee any renewable energy producer a price that more than covered costs. Fell promptly organized an association of local investors to build a 15-kilowatt solar power plant—tiny by today’s standards, but the association was one of the first of its kind. Now there are hundreds in Germany.

In 1998 Fell rode a Green wave and his success in Hammelburg into the Bundestag. The Greens formed a governing coalition with the SPD. Fell teamed up with Hermann Scheer, a prominent SPD advocate of solar energy, to craft a law that in 2000 took the Hammelburg experiment nationwide and has since been imitated around the world. Its feed-in tariffs were guaranteed for 20 years, and they paid well.

“My basic principle,” Fell said, “was the payment had to be so high that investors could make a profit. We live in a market economy, after all. It’s logical.”

Picture of a coal field in Germany

Renewables are booming, but Germany’s use of lignite, the dirtiest coal, hasn’t declined. At Vattenfall’s Welzow-Süd mine, some of the world’s largest machines claw 22 million tons a year from a 45-foot-thick seam. How long will that go on? “Very long, I hope,” said Jan Domann, a young engineer. “We have enough lignite.”

Fell was about the only German I met who claimed not to have been surprised at the boom his logic unleashed. “That it would be possible to this extent—I didn’t believe that then,” said dairy farmer Wendelin Einsiedler. Outside his sunroom, which overlooks the Alps, nine wind turbines turned lazily on the ridge behind the cow pen. The smell of manure drifted in. Einsiedler had started his personal energiewende in the 1990s with a single turbine and a methane-producing manure fermenter. He and his brother Ignaz, also a dairy farmer, burned the methane in a 28-kilowatt cogenerator, generating heat and electricity for their farms. “There was no question of making money,” Einsiedler said. “It was idealism.”

But after the renewable energy law took effect in 2000, the Einsiedlers expanded. Today they have five fermenters, which process corn silage as well as manure from eight dairy farms, and they pipe the resulting biogas three miles to the village of Wildpoldsried. There it’s burned in cogenerators to heat all the public buildings, an industrial park, and 130 homes. “It’s a wonderful principle, and it saves an unbelievable amount of CO₂,” said Mayor Arno Zengerle.

The biogas, the solar panels that cover many roofs, and especially the wind turbines allow Wildpoldsried to produce nearly five times as much electricity as it consumes. Einsiedler manages the turbines, and he’s had little trouble recruiting investors. Thirty people invested in the first one; 94 jumped on the next. “These are their wind turbines,” Einsiedler said. Wind turbines are a dramatic and sometimes controversial addition to the German landscape—“asparagification,” opponents call it—but when people have a financial stake in the asparagus, Einsiedler said, their attitude changes.

Picture of Bill Nye standing in front of smoke stacks

Bill Nye’s Global Meltdown

Watch the National Geographic Channel on Sunday, November 1, at 8/7c as Bill Nye explores the five stages of climate change grief—from denial to acceptance.

It wasn’t hard to persuade farmers and homeowners to put solar panels on their roofs; the feed-in tariff, which paid them 50 cents a kilowatt-hour when it started in 2000, was a good deal. At the peak of the boom, in 2012, 7.6 gigawatts of PV panels were installed in Germany in a single year—the equivalent, when the sun is shining, of seven nuclear plants. A German solar-panel industry blossomed, until it was undercut by lower-cost manufacturers in China—which took the boom worldwide.

Fell’s law, then, helped drive down the cost of solar and wind, making them competitive in many regions with fossil fuels. One sign of that: Germany’s tariff for large new solar facilities has fallen from 50 euro cents a kilowatt-hour to less than 10. “We’ve created a completely new situation in 15 years—that’s the huge success of the renewable energy law,” Fell said.

Germans paid for this success not through taxes but through a renewable-energy surcharge on their electricity bills. This year the surcharge is 6.17 euro cents per kilowatt-hour, which for the average customer amounts to about 18 euros a month—a hardship for some, Rosenkranz told me, but not for the average German worker. The German economy as a whole devotes about as much of its gross national product to electricity as it did in 1991.

In the 2013 elections Fell lost his seat in the Bundestag, a victim of internal Green Party politics. He’s back in Hammelburg now, but he doesn’t have to look at the steam plumes from Grafenrheinfeld: Last June the reactor became the latest to be switched off. No one, not even the industry, thinks nuclear is coming back in Germany. Coal is another story.

Picture of a plane over solar panels

Picture of workers at the Leipzig factory building i8 and i3 cars

Picture of a man preparing a wind turbine blade at the Siemens factory in Denmark

Picture of wind turbine being repaired in the North Sea

Picture of German offshore wind turbines

 

A sea of photovoltaic panels surrounds the runway at the Eberswalde-Finow Airport, 30 miles north of Berlin. Germany is at the same latitude as Labrador, Canada, but has installed more solar capacity than any other country. Most panels are on rooftops.

Germany got 44 percent of its electricity from coal last year—18 percent from hard coal, which is mostly imported, and about 26 percent from lignite, or brown coal. The use of hard coal has declined substantially over the past two decades, but not the use of lignite. That’s a major reason Germany isn’t on track to meet its own greenhouse gas emissions target for 2020.

Germany is the world’s leading producer of lignite. It emits even more CO₂ than hard coal, but it’s the cheapest fossil fuel—cheaper than hard coal, which is cheaper than natural gas. Ideally, to reduce emissions, Germany should replace lignite with gas. But as renewables have flooded the grid, something else has happened: On the wholesale market where contracts to deliver electricity are bought and sold, the price of electricity has plummeted, such that gas-fired power plants and sometimes even plants burning hard coal are priced out of the market. Old lignite-fired power plants are rattling along at full steam, 24/7, while modern gas-fired plants with half the emissions are standing idle.

“Of course we have to find a track to get rid of our coal—it’s very obvious,” said Jochen Flasbarth, state secretary in the environment ministry. “But it’s quite difficult. We are not a very resource-rich country, and the one resource we have is lignite.”

Picture of the cliffside in Germany

The chalk cliffs at Jasmund National Park on the Baltic have drawn tourists for centuries. The beech woods there are a remnant of the forest that once covered Germany. According to Romantic lore, the forest forged the German identity as a nature-loving people—a key inspiration for the clean-energy movement. When a quarry threatened this site in the 1920s, ranger Rico Markmann explains, “the populace didn’t stand for it.”

Curtailing its use is made harder by the fact that Germany’s big utilities have been losing money lately—because of the energiewende, they say; because of their failure to adapt to the energiewende, say their critics. E.ON, the largest utility, which owns Grafenrheinfeld and many other plants, declared a loss of more than three billion euros last year.

“The utilities in Germany had one strategy,” Flasbarth said, “and that was to defend their track—nuclear plus fossil. They didn’t have a strategy B.” Having missed the energiewende train as it left the station, they’re now chasing it. E.ON is splitting into two companies, one devoted to coal, gas, and nuclear, the other to renewables. The CEO, once a critic of the energiewende, is going with the renewables.

Vattenfall, a Swedish state-owned company that’s another one of Germany’s four big utilities, is attempting a similar evolution. “We’re a role model for the energiewende,” spokesperson Lutz Wiese said cheerfully as he greeted me at Welzow-Süd—an open-pit mine on the Polish border that produces 22 million tons of lignite a year. In a trench that covers 11 square miles and is more than 300 feet deep, 13 gargantuan digging machines work in synchrony—moving the trench through the landscape, exposing and removing the lignite seam, and dumping the overburden behind them so the land can be replanted. In one recultivated area there’s a small experimental vineyard. On the same rebuilt hill stands a memorial to Wolkenberg, a village consumed by the mine in the 1990s. Boulders mark the spots where the church and other buildings once stood.

It was a gorgeous spring day; from Wolkenberg, the only cloud we could see was the lazily billowing steam plume from the 1.6-gigawatt power plant at Schwarze Pumpe, which burns most of the lignite mined at Welzow-Süd. In a conference room, Olaf Adermann, asset manager for Vattenfall’s lignite operations, explained that Vattenfall and other utilities had never expected renewables to take off so fast. Even with the looming shutdown of more nuclear reactors, Germany has too much generating capacity.

Picture of a people riding segways in Germany

Citizens have funded half of Germany’s investment in renewable energy after a law made it profitable. Outside the village of Feldheim, visitors tour the wind park. It sells electricity to the national grid—but also supplies a local grid that makes Feldheim self-sufficient.

“We have to face some kind of a market cleaning,” Adermann said. But lignite shouldn’t be the one to go, he insisted: It’s the “reliable and flexible partner” when the sun isn’t shining or the wind isn’t blowing. Adermann, who’s from the region and worked for its lignite mines before they belonged to Vattenfall, sees them continuing to 2050—and maybe beyond.

Vattenfall, however, plans to sell its lignite business, if it can find a buyer, so it can focus on renewables. It’s investing billions of euros in two new offshore wind parks in the North Sea—because there’s more wind offshore than on and because a large corporation needs a large project to pay its overhead. “We can’t do onshore in Germany,” Wiese said. “It’s too small.”

Vattenfall isn’t alone: The renewables boom has moved into the North and Baltic Seas and, increasingly, into the hands of the utilities. Merkel’s government has encouraged the shift, capping construction of solar and onshore wind and changing the rules in ways that shut out citizens associations. Last year the amount of new solar fell to around 1.9 gigawatts, a quarter of the 2012 peak. Critics say the government is helping big utilities at the expense of the citizens’ movement that launched the energiewende.

At the end of April, Vattenfall formally inaugurated its first German North Sea wind park, an 80-turbine project called DanTysk that lies some 50 miles offshore. The ceremony in a Hamburg ballroom was a happy occasion for the city of Munich too. Its municipal utility, Stadtwerke München, owns 49 percent of the project. As a result Munich now produces enough renewable electricity to supply its households, subway, and tram lines. By 2025 it plans to meet all of its demand with renewables.

In part because it has retained a lot of heavy industry, Germany has some of the highest per capita carbon emissions in western Europe. (They’re a bit more than half of U.S. emissions.) Its goal for 2020 is to cut them by 40 percent from 1990 levels. As of last year, it had achieved 27 percent. The European carbon-trading system, in which governments issue tradable emissions permits to polluters, hasn’t been much help so far. There are too many permits in circulation, and they’re so cheap that industry has little incentive to cut emissions.

Though Germany isn’t on track to meet its own goal for 2020, it’s ahead of the European Union’s schedule. It could have left things there—and many in Merkel’s CDU wanted her to do just that. Instead, she and Economics Minister Sigmar Gabriel, head of the SPD, reaffirmed their 40 percent commitment last fall.

They haven’t proved they can meet it, however. Last spring Gabriel proposed a special emissions levy on old, inefficient coal plants; he soon had 15,000 miners and power plant workers, encouraged by their employers, demonstrating outside his ministry. In July the government backed down. Instead of taxing the utilities, it said it would pay them to shut down a few coal plants—achieving only half the planned emissions savings. For the energiewende to succeed, Germany will have to do much more.

Picture of a dismantled nuclear facility turned theme park

In 1996 the Kalkar nuclear reactor site, on the Rhine near Holland, opened as an amusement park: Wunderland Kalkar. By 2050 Germany aims to be a new kind of wonderland—an industrial country that uses half as much energy as before and gets at least 80 percent from renewables.

It will have to get off gasoline and diesel too. The transportation sector produces about 17 percent of Germany’s emissions. Like the utilities, its famous carmakers—Mercedes-Benz, BMW, Volkswagen, and Audi—were late to the energiewende. But today they’re offering more than two dozen models of electric cars. The government’s goal is to have a million electric cars on the road by 2020; so far there are about 40,000. The basic problem is that the cars are still too expensive for most Germans, and the government hasn’t offered serious incentives to buy them—it hasn’t done for transportation what Fell’s law did for electricity.

Much the same is true of buildings, whose heating systems emit 30 percent of Germany’s greenhouse gases. Rolf Disch in Freiburg is one of many architects who have built houses and buildings that consume almost no net energy or produce a surplus. But Germany is not putting up many new buildings. “The strategy has always been to modernize old buildings in such a way that they use almost no energy and cover what they do use with renewables,” said Matthias Sandrock, a researcher at the Hamburg Institute. “That’s the strategy, but it’s not working. A lot is being done, but not enough.”

All over Germany, old buildings are being wrapped in six inches of foam insulation and refitted with modern windows. Low-interest loans from the bank that helped rebuild the war-torn west with Marshall Plan funds pay for many projects. Just one percent of the stock is being renovated every year, though. For all buildings to be nearly climate neutral by 2050—the official goal—the rate would need to double at least. Once, Sandrock said, the government floated the idea of requiring homeowners to renovate. The public outcry shot that trial balloon down.

“After Fukushima, for a short time there was aufbruchstimmung—for about half a year there was a real euphoria,” said Gerd Rosenkranz. Aufbruchstimmung means something like “the joy of departure”; it’s what a German feels when he’s setting out on a long hike, say, in the company of friends. With all the parties in Germany in agreement, Rosenkranz said, the energiewende felt like that. But the feeling hasn’t lasted. Economic interests are clashing now. Some Germans say it might take another catastrophe like Fukushima to catalyze a fresh burst of progress. “The mood is bad,” Rosenkranz said.

They knew the energiewende was never going to be a walk in the forest, and yet they set out on it. What can we learn from them?

But here’s the thing about the Germans: They knew the energiewende was never going to be a walk in the forest, and yet they set out on it. What can we learn from them? We can’t transplant their desire to reject nuclear power. We can’t appropriate their experience of two great nation-changing projects—rebuilding their country when it seemed impossible, 70 years ago, and reunifying their country when it seemed forever divided, 25 years ago. But we can be inspired to think that the energiewende might be possible for other countries too.

In a recent essay William Nordhaus, a Yale economist who has spent decades studying the problem of addressing climate change, identified what he considers its essence: free riders. Because it’s a global problem, and doing something is costly, every country has an incentive to do nothing and hope that others will act. While most countries have been free riders, Germany has behaved differently: It has ridden out ahead. And in so doing, it has made the journey easier for the rest of us.

 

http://ngm.nationalgeographic.com/2015/11/climate-change/germany-renewable-energy-revolution-text

Renault Coupé Corbusier concept pays tribute to famous architect

 

 

The Corbusier concept car pays tribute both to France's most famous 20th Century architect

The Corbusier concept car pays tribute both to France's most famous 20th Century architect (Credit: Renault Design)

Designers at French automotive manufacturer, Renault, have created a concept car to commemorate the 50th anniversary of the death of France’s best-known 20th century architect Le Corbusier, dubbed the Coupé Corbusier. With a long, high-level hood, a low glasshouse cockpit, and dihedral doors hinged at the rear, the Coupé Corbusier is a melange of geometric shapes and rounded angles that reflect the signature style of the great architect.

  • The Corbusier concept has LED tail lights and an LED-illuminated interior
  • The Corbusier concept has rear-hinged dihedral doors
  • The design of the swooping guards evokes French automobiles of the 1930s
  • The seats in the Corbusier would look at home in a designer apartment

Born Charles-Édouard Jeanneret-Gris in Switzerland on October 6, 1887, and more famously known as Le Corbusier (a pseudonym adopted when he moved to France and made it his home), the man to whom this concept car pays tribute was an architect, designer, painter, and one of the foremost pioneers of modern architecture. In a career spanning five decades, his building designs were constructed across Europe, India, and the Americas. This year marks the 50thanniversary of his death in August, 1965.

"The Design teams at Groupe Renault are proud to pay homage to the visionary architect and designer who reinvented architecture and made it more broadly accessible," said Renault. "His thought and value structure is one that we share... The ideas of simplicity, a visually- and aesthetically-pleasing structure, geometric elegance and mastery of light guided the designers in the creation of the Coupé Corbusier concept car."

Beginning two years ago, design teams at Groupe Renault have been regularly tasked with working on forward-looking subjects that may predict possible future vehicles completely unrelated to Renault range renewals. These exercises are said to provide staff with the opportunity to explore new ideas and provide their creatives with a break from standard design tasks so that they can participate in recreational, free-range vehicle art. This year, the teams chose to draw on the topic of "French cultural objects" to which they referred to the 1930s; the so-called golden age of French automobiles.

"The influence of Le Corbusier asserted itself as the obvious source of reflection, as a sort of conceptual prequel to the modern automobile," said Renault in regard to the design.

Having said this, though evidence may be found in the use of swooping guards as found in automobiles of the period, and the geometric shapes of Le Corbusier are peppered throughout the body, the concept also includes some design cues discernible from other Renault Concepts – such as the 2014 KWID – particularly noticeable in the use of dihedral doors and the large and prominent radiator grill.

As to the specifications for the vehicle, however, Renault has not proffered any clue to its dimensions or the powertrain driving it, if there is one at all. Seemingly a static display, the vehicle is being shown at a modernist villa in Poissy on the outskirts of Paris, in an exhibition entitled Cars for living: the automobile and modernism in the 20th and 21st centuries.

Along with a range of other automobile creations and artwork, France’s Centre des Monuments Nationaux has organized the exhibition to celebrate French automobile design and manufacturing heritage, which runs from October 22, 2015 to March 20, 2016.

Source: Renault Group

  • The Corbusier has a modular, simple interior
  • The Corbusier has a modular, simple interior
  • The dihedral doors are a Renault concept car theme
  • Design teams at Groupe Renault have been regularly tasked with working on forward-looking subjects that may predict possible future vehicles completely unrelated to Renault range renewals

 

http://www.gizmag.com/renault-coupe-corbusier-concept-car/39998/

The future of encryption

 

 

With so much of our information now stored or processed in the cloud, how can we make sure it's safe from unauthorized access? The National Science Foundation is funding researchers looking for answers to cyber-security challenges and exploring the future of encryption. The goal is that, one day, we will be able to ensure the security of important information wherever it may be: on our computers, mobile devices, and even in the cloud. Credit: Amina Khan, NSF


7 Simple Steps to Changing Your Life Through Your Morning Ritual – How to Win The Day Everyday

 

Morning ritual makes a difference

 

www.morelloandmay.com/2015/10/7-simple-steps-to-changing-your-life-through-your-morning-ritual-how-to-win-the-day-everyday/?_nospa=true