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A solar-powered reaction turns a greenhouse gas into a valuable raw material.
Turbines are being submerged in the East River to generate electricity from rapid tidal currents.
The flexible electric car platform is innovative, but the fuel-cell version is freighted with hydrogen’s flaws.
Consumers may find that the virtues of biodegradable plastics are really a mixed bag.
Propane chemically derived from corn could be used in heating and transportation.
On the surface of a new photovoltaic prototype, microscopic nanotube towers perform best when they catch light on their sides.
European researchers have built prototypes that combine plastic solar cells with ultrathin, flexible batteries. But don’t throw away your battery recharger just yet.
Forget ethanol: it’s hard to transport and gives bad mileage per gallon. Another alcohol, butanol, is a much better renewable fuel, says the president of BP Biofuels.
A new type of material could allow solar cells to harvest far more light.
A new MIT study says that no single technology is the solution to economically cutting carbon-dioxide emissions from coal.