Millions of batteries discarded with computers have more than enough life to power home lighting for one year, researchers in India say.
Inexpensive oil could increase the pressure to reduce mandates for biofuels.
A new material that requires no electricity uses the universe as a heat sink—even when the sun is shining.
A new solar power system is easy to add to a roof, and performs its own safety checks.
China may put a stop to growing carbon dioxide emissions earlier than expected, but how quickly they start coming down is also important.
Coupled computer models will help officials know what to do as intense storms approach.
A big investment in data-driven city management starts to pay off.
A startup has started selling a battery that helps solar and wind power operate in remote locations.
The effects of atmospheric carbon linger for centuries, so historical emissions totals are relevant context for the global climate policy debate.
Latest synthesis report from U.N. panel says we’ve already emitted half the permissible greenhouse gases if we wish to avoid the worst.