Severe droughts are forcing researchers to rethink how technology can increase the supply of fresh water.
The technology could make it cheaper to use wind and solar power and to switch to natural gas from coal.
It’s not enough to have compelling technology—small solar companies need a solid business model, rich partners, and manufacturing know-how.
A Columbia scientist and his startup think they have a plan to save the world. Now they have to convince the rest of us.
The world’s best-known consciousness researcher says machines could one day become self-aware.
A new cosmology successfully explains the accelerating expansion of the universe without dark energy; but only if the universe has no beginning and no end.
Kauai’s utility takes a second stab at battery storage as solar heads toward 80 percent of peak power.
Solar manufacturers like Suntech are struggling. Hundreds need to die for the industry to recover.
GM Volt sales are dwarfed by increased sales of conventional vehicles.
Better Place got it wrong: First make a car that people want, then build infrastructure to let them drive it cross-country.