A leaf seems so simple, until you try to recreate its ability to store the sun's energy.
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Tesla has just unveiled a line of home batteries, but they aren't much different from the batteries that currently power their cars, experts say.
Taken together, monitors and personal computers draw electricity equivalent to the energy from three dozen power plants — but that energy sink may soon get plugged.
A solar-powered plane, dubbed Solar Impulse 2, took flight this morning (March 9), embarking on the first leg of a planned journey around the world.
Huge companies including Apple, Wal-Mart and Ikea have spent big bucks on green energy — why are so many governments lagging behind?
Battery-powered electric cars and hydrogen fuel cell vehicles have both seen advances in their development, and one or both of these technologies may represent the future of "green" automobiles.
Researchers in Australia recently developed a solar energy system that can convert over 40 percent of the sunlight that hits it into electricity.
A new superthin material can cool buildings without requiring electricity, by beaming heat directly into outer space, researchers say.
To capture more energy from the sun, one company is putting solar panels where they've never gone before: in the street.
A new kind of solar cell could store electrical energy without any help from traditional batteries, according to a new study.
The first solar-powered flight around the world will take off from and touch down in Abu Dhabi, capital of the United Arab Emirates, officials announced today (Sept. 25).