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.
Renewables are intermittent, so they'd have to be backed up by about 80 gigawatts worth of batteries.
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.
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.
Who says Pinterest is just for fashion and cupcakes?
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 …
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.
"Grid parity" has arrived in parts of sunny California and Hawaii, and it's coming to (not-so-sunny) Germany by 2013.
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.