Methane seen as growing climate risk

Methane, a potent global warming gas, is bubbling out of the frozen Arctic faster than had been expected.

Methane had become trapped in the permafrost over time and a warming climate is now resulting in its release, researchers report in Friday's edition of the journal Science.

YAHOO NEWS

Artificial photosynthesis could power your house, even if it's not green

It's a sad state of affairs: your lawn is better at converting the sun into energy than that $23k solar array your neighbors just threw on their roof. Sun Catalytix wants to show that grass what's what with a new process for splitting water into hydrogen and oxygen -- artificial photosynthesis. In a presentation at the ARPA-E conference (the Advanced Research Projects Agency -- basically DARPA minus the military bent) Sun Catalytix founder Dan Nocera indicates that the process his company is developing could, with a photovoltaic array, four hours of sunlight, and a bottle of water, generate 30 kilowatt-hours of electricity.

ENGADGET