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Falling costs are making fuel-cell vehicles look like a plausible alternative to conventional cars.
The fledgling U.S. wind industry would be significantly set back if the credit isn’t renewed.
The IPCC says we can emit a trillion tons of carbon and still avoid major warming. We’ll emit much more.
A Caltech researcher thinks arrays of tiny wind turbines could produce cheaper power than big ones.
Doubling the efficiency of solar devices would completely change the economics of renewable energy. Here is a design that just might make it possible.
No other means of storing energy may be able to reach the scale required to run Germany on solar and wind power.
Japan is desperately trying to replace its nuclear-power capacity with renewables. It still has a long way to go.
The technology could make it cheaper to use wind and solar power and to switch to natural gas from coal.
Solar manufacturers like Suntech are struggling. Hundreds need to die for the industry to recover.