A report says a third of Africans are now middle class. Their interests coincide with the interests of the poor and should help to bring about change

"Very radical" concept could be a game-changer for the solar industry.

Cambridge, MA, USA -- MIT researchers and their collaborators have come up with an unusual, high performance and possibly less expensive way of turning the sun's heat into electricity.

OSLO — Global sea levels will rise faster than expected this century, partly because of quickening climate change in the Arctic and a thaw of Greenland’s ice, an international report said Tuesday.

The rise would add to threats to coasts from Bangladesh to Florida, low-lying Pacific islands and cities from London to Shanghai. It would also raise the cost of building tsunami barriers in Japan.No

The current energy landscape is rife with contradictions: Gas prices are shooting up, renewables are being implemented at a seemingly rapid pace, natural gas is being simultaneously demonized and hailed as an energy savior, and electric cars are finally starting to roll off production lines. Fortunately, your tax dollars fund a government agency devoted to making sense of energy.