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By making a cheaper LED lightbulb, the newcomer to the industry hopes to dominate the market for energy-efficient lighting alternatives.
Doubling the efficiency of solar devices would completely change the economics of renewable energy. Here is a design that just might make it possible.
The company has managed the nearly impossible for a solar startup over the last few years: it is still in business.
If it can convert natural gas to transportation fuels and commodity chemicals, it could reduce our dependence on oil.
GE, the world’s largest manufacturer, is on the verge of using 3-D printing to make jet parts.
ARPA-E faces a tricky mandate—invest in risky technologies that no one else wants to fund, while still showing results.
A startup says its technical advances could make fuel cells as cheap as grid power.