Cleantech

Solar Power

Peel-off solar panels could make solar competitive with coal

Ultra-thin solar cells that can be "peeled off" from larger pieces of silicon like delicious fruit roll-ups could be the key to making solar competitive with coal, say researchers at MIT.

Renewable Energy

A battery large enough to power the U.S. would be the size of 2,200 Walmart SuperCenters

Renewables are intermittent, so they'd have to be backed up by about 80 gigawatts worth of batteries.

Green Cars

DOE-funded battery breakthrough to halve cost, triple range

A new breakthrough from California-based Envia Systems will yield lithium-ion batteries that are less than half the cost of current cells, while also having three times the energy density.

Business & Technology

LEGO buys $500 million worth of wind turbines

The world's third-largest toy manufacturer is going to be putting "made with wind power" labels on all those boxes of LEGOs, and not just because they bought their power from utilities with wind turbines.

Climate & Energy

The best of the U.S. Army’s ‘Going Green’ Pinterest

Who says Pinterest is just for fashion and cupcakes?

Cleantech

One Million Lights trades kerosene for solar in developing countries

For kids in developing countries, it’s crucial to have a reliable light source — otherwise you can’t see to read or do your homework. But many homes and villages don’t have electric light, and the …

Cleantech

Map shows avalanche of cellulosic ethanol projects on the way

In the battle between food and fuel, cellulosic ethanol might not be a great idea or even a viable solution to our energy woes, but enzyme company Novozymes says it's coming, regardless.

Business & Technology

In Germany, solar will be as cheap as conventional electricity by 2013

"Grid parity" has arrived in parts of sunny California and Hawaii, and it's coming to (not-so-sunny) Germany by 2013.

Business & Technology

Kazakhstan, Mongolia to rescue us from China’s rare earths monopoly

Germany just signed agreements with Kazakhstan and Mongolia to mine rare earths in those countries, in an effort to break China's monopoly over these 17 elements.

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