Germany has decided to pursue ambitious greenhouse-gas reductions—while closing down its nuclear plants. Can a heavily industrialized country power its economy with wind turbines and solar panels?
Looking to enter a highly competitive solar market, Alta Devices hopes to use a combination of technological advances and manufacturing savvy to succeed where many others have crashed and burned.
Chinese manufacturers have dominated the international market for conventional solar panels by building bigger factories faster. Now they will need to innovate to maintain their lead.
Today's electric cars and wind turbines rely on a few elements that are mined almost entirely in China. Demand for these materials may soon exceed supply. Will this be China's next great economic advantage?
Every clean-tech startup these days claims to have a breakthrough that will finally make renewable and clean energy sources cheap enough to compete with fossil fuels. But are we really on the brink of a clean-energy economy?
A new wave of plug-in hybrids and all-electric vehicles will have to overcome a familiar nemesis: battery costs.
An expected nuclear renaissance has failed to materialize as plans for new plants are scrapped or delayed. What happened?
Suntech CEO Zhengrong Shi made China a powerhouse in photovoltaic technology--and became a billionaire in the process. His next ambition: to make solar power as cheap as conventional electricity.
California-based Amyris has used breakthroughs in synthetic biology to reinvent biofuels. To turn its technology into an industrial process, it has headed to the land of sugar: Brazil.
For years, radical thinkers have proposed risky technologies that they say could rapidly cool the earth and offset global warming. Now a growing number of mainstream climate scientists say we may have to consider extreme action despite the dangers.