MIT researchers have announced that they have created “organic solar concentrators” that could make windows become powerful solar panels in as little as three years.

Hydrogen fuel-cell vehicles are still 15 years away from becoming a viable business for automakers even if they overcome remaining technical hurdles and the U.S. government provides massive subsidies, a government-funded report said on Thursday.

Did the tropics overheat during the Eocene some 55 to 34 million years ago? The answer holds the key to how our planet will respond to global warming, according to one climate researcher.

The Earth went through a prolonged phase of extremely high temperatures during the Eocene, in which even the poles were ice-free.