The U.S. will still need more big breakthroughs to eliminate the need for imported oil.
Transatomic is developing a new kind of molten-salt reactor designed to overcome the major barriers to nuclear power.
Advanced materials and smart design could lower turbine blade costs by 40 percent.
A proposed engine design approaches the efficiency of gas-electric hybrids, but could be far cheaper.
Crop yields are expected to decline due to climate change faster than scientists thought.
But is the company scaling up its technology too fast?
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.