Alternative Energy Technology

Photovoltaics proved so successful in Hawaii that the local utility, HECO, has instituted policies to block further expansion

New York is one of the few cities with a climate plan. Here's how that idea began

A carbon threshold breached, commitments to brain science made, mystery neutrinos found and human evolution revised—these and other events highlight the year in science and technology as picked by the editors of Scientific American

Test fleets of the alternatively fueled vehicles have run into a host of difficulties, but continue to move forward

When Gloria Adams signed a contract to install a rooftop solar power system on her Oahu home in late August, she looked forward to lower electric bills and a return on her investment in the years ahead.

From clean coal to infrastructure resilience, the new Secretary of Energy has plans for combating climate change

A coolant made from soybean oil and a more ecofriendly white paint are among the winners of the 2013 Presidential Green Chemistry Challenge Awards

The average fuel economy of vehicles sold in the United States hit a record high 23.6 miles per gallon (mpg) for the model year 2012, the U.S.

No other coal deposit on the planet is so big, so close to the surface and so cheap to mine as the rich seams in eastern Wyoming and southern Montana. And that's made the Powder River Basin the locus of a national debate on how we develop fossil fuel reserves

Scientists have produced hydrogen by accelerating a natural process found in rocks deep below the Earth's surface, a short-cut that may herald the wider use of what is a clean fuel, a study showed on Sunday.

The Obama administration on Friday extended the length of permits that allow wind farms and other operations to accidentally kill protected eagles to 30 years, drawing fire from wildlife conservationists.

Supporters of the renewable fuels industry turned out en masse on Thursday, desperate for the U.S. government to change course after last month announcing a plan to lower the amount of biofuels that must be added to the fuel supply in 2014.