PERMACULTURE & PEAK OIL:



PERMACULTURE & PEAK OIL: Beyond ‘Sustainability’ (via http://www.occupymonsanto360.org)

David Holmgren is co-originator (with Bill Mollison) of the permaculture concept and author of the recent book, PERMACULTURE: Principles and Pathways Beyond Sustainability. He talks about the need to move beyond the lulling hope that ‘green tech’ breakthroughs will allow world-wide ‘sustainable…

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How One German Village Became a Renewable Energy Leader



Power Play — German Energy Revolution Video (via Clean Technica)

  The German village Schönau forced the grid operator to sell its local grid to them decades ago. Now, that village has become a renewable energy leader. As you can see in the video below, it’s a major producer of renewable energy. One of the pioneers there also has a wicked little electric vehicle…

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Pedal Power



The Pedal Powered Business: Turning Human Power into Profit (via sustainablog)

Pedal powered business – we’ve done that before.  From food delivery to recycling pick-up to musical tours, we’ve seen multiple examples of businesses that use bicycles as their sole means of transportation. But the energy transferred from biker to bike doesn’t necessarily have to create forward…

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Affordable Biofuel



Food Waste Could Create Hydrogen Fuel (via Gas 2.0)

The world of the 21st century faces some incredibly daunting challenges that, unless dealt with soon, may eventually reach the point of no return. Overpopulation, water shortages, and climate change is just some of the long list of problems facing the world. Researchers in the UK may have come up with…

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In the News



Solar News Roundup (via Clean Technica)

  Some more solar energy news from around the net to wrap up the week: SolarCity & Clean Currents have teamed up to offer fixed-price Power Purchase Agreements (PPA) for solar power with as little as $0 down and long-term electricity discounts/savings. The largest city-sponsored solar financing…

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1,400 miles on Nothing but Hydrogen



Hydrogen Hyundais Cross Europe, Longest Hydrogen Journey Ever (via Gas 2.0)

As an alternative to oil, hydrogen seems so promising, and yet so impossible. The only emissions from hydrogen fuel cells is water. Alas, the expense and lack of infrastructure mean they’re pretty much just a pipe dream for now. But over in Europe, two teams of drivers have driven hydrogen-powered…

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Leaf-Mimicking Design Boosts Output of Solar Panels

e360 digest

Leaf Mimicking Solar Panel

By adding microscopic folds onto the surface of photovoltaic materials, a design variation borrowed from a natural leaf, researchers say they have been able to boost the solar output of flexible plastic solar cells by 47 percent. According to the scientists, who published their findings in the journal Nature Photonics, the folds acted as a sort of “wave guide,” channeling light waves and increasing the material’s exposure to light. “I expected that it would increase the photocurrent because the folded surface is quite similar to the morphology of leaves, a natural system with high light harvesting efficiency,” said Jong Bok Kim, a researcher from Princeton University and lead author of the study. “However, when I actually constructed solar cells on top of the folded surface, its effect was better than my expectations.” And since the researchers used relatively inexpensive plastic materials — as opposed to the more expensive silicon commonly used in panels — they hope their findings will help lead to a cheaper and efficient source of solar power.

Yale School of Forestry
& Environmental Studies
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