It's not old enough to have slurped dino blood, but a well-fed mosquito from 46 million years ago is the first such fossil to be discovered.
Adventurers discuss the challenges they face in their bid to become first to circumnavigate the globe without fossil fuel in the Solar Impulse, a solar-powered plane that can fly at night.
No oil, no coal, no nuclear. Radical thinker Amory Lovins says combining cutting-edge technology through integrated design is the key to clean energy innovation.
Fossil pioneer Nicolas Steno is celebrated today with a geological Google doodle.
The hard-worked San Juan basin in northern New Mexico dramatically illustrates the scale of coal and natural-gas production in the U.S.
An aerial view of New Mexico's San Juan basin shows the impact of coal power and natural gas drilling in a major production area.
Cheap natural gas from "fracking" shale rock and other unconventional fossil fuels are making life tough for cleantech.
World's leading engineering organization says improved solar technology efficiency and scalability could facilitate cost parity.
The International Energy Agency says the clean energy needs more incentives for private sector investment and market mechanisms.
Dr. Richard B. Hoover, an astrobiologist with NASA's Marshall Space Flight Center, claims there's fossil evidence of bacterial life on meteorite he studied.