A new lithium-ion battery from A123 Systems could help electric cars and hybrids come to dominate the roads.
Exciting new ways to make fuels are emerging.
Politics continue to complicate energy policy.
Gregory Stephanopoulos explains challenges in converting biomass to biofuels.
Making ethanol from corn is expensive. Better biofuels are years away from the gas tank. Farmers are reluctant to change their practices. But do we really have any alternative to biofuels?
Determining how fast ice sheets are melting is critical to future policy.
At a remote outpost in northern Greenland, a team of scientists are attempting to resolve the central mystery of global warming: how quickly will sea levels rise?
Plug-in hybrids could bring gas-free commutes. But will they make it to market?
Nanoengineered materials could reduce greenhouse-gas emissions.
The nanotech pioneer turns to energy.