A state-by-state breakdown of policies that could change your community.
Why would a petro-state erect a solar-powered eco-metropolis in the middle of the Arabian desert? To change the world.
For environmentalist Jesse Ausubel, going green means land conservation and energy efficiency—and forgetting “boutique” renewables like windmills and biofuels
Even if we tap every renewable power source available, it won't mean a thing without a final, crucial step: reinventing the grid
Looking for a clean fuel that grows anywhere, needs only sunlight and water, and could produce enough oil to free the U.S. from its petroleum addiction? Here´s one start-up's plan for converting oil from algae-yes, algae
Joseph Longo's Plasma Converter turns our most vile and toxic trash into clean energyâ€”and promises to make a relic of the landfill
Time will tell if natural gas is a bridge or a brick wall.
Before Going Off the Grid
Readers ask -- and you answer
Wind, solar, tidal—all are battling for the renewable-energy crown, but what about the six billion highly efficient short-stroke engines in our midst? What about us?
Last week was a busy one in Congress for climate legislation. But signals have been mixed
Our dependence on big systems--big oil, big coal--steers us away from little ones, such as biofuel made from garbage, that are transforming communities in other countries
In the global race to reduce carbon emissions, these eco-minded communities, from Kansas to the Maldives, lead the pack. Here's how they're making their carbon footprints disappear
Western architects have grand plans for helping China solve its expanding environmental crisis. But the world's dirtiest country already has the power to clean up all on its own
Scientists weigh in on the President-elect's picks and what people should expect from the dream green team
Turbines to take root in the sea
Can concentrated PV plants beat solar thermal technology?
Which technologies will finally free us from oil?
Green technology is on the rise, but the U.S. still consumes an enormous amount of fossil fuels
If fossil fuels are to remain a large part of the nation's energy mix, engineers need to reduce their environmental impacts.
Reinventing the array could usher in a new age for solar.