The low-cost cells make their debut on electronics-charging bags.
Thin-film silicon solar cells are more efficient with tiny holes in the back electrical contact.
A U.S.-Chinese venture is out to prove the benefits of quick-charge buses.
Startup Coskata has opened a "semi-commercial" ethanol plant to demonstrate its technology.
New lasers will be key to making fusion energy and proton therapy practical.
Smaller and more practical electron-beam emitters could save millions of tons of C02 emissions.
The president of NRDC points to a growing investment by China in energy technologies.
Gasifying coal underground could slash the cost of carbon capture--but don't hold your breath for it to happen.
Despite subsidies and new projects, carbon dioxide sequestration is still a long way off.
A new anode allows solid-oxide fuel cells to function at lower temperatures.