Two 'once-in-a-century' droughts have hit the Amazon rainforest in just five years, scientists say, removing the region's ability to act as a carbon sink.
Researchers at the Department of Energy's Oak Ridge National Laboratory have successfully demonstrated a biohybrid photoconversion system that can convert visible light into hydrogen fuel.
A frequent criticism of electric vehicles (EVs) is that they're really powered by coal, since that's such a significant source of electricity.
Disaster-stricken areas often need more than temporary structures for secure housing. They need power, too, for cooking, and for pumping and purifying water, and to help provide medical services.
At first glance, the RYNO Motors Micro-Cycle looks like something that could only exist in Portlandia, the hilarious send-up on Portland, Ore., from Fred Armisen and Carrie Brownstein.
A British start-up says it's found a cheap, practical way of storing hydrogen, making it a viable alternative to gasoline in cars.
Milk, cream, proteins, syrups and pieces of fruit - all are are part of the waste stream of ice-cream factories, and soon, at a Ben and Jerry's factory in the Netherlands, they'll all help to produce green power.
In a State of the Union address packed with nods to cleantech, President Obama's call for the United States to become the first nation with one million electric vehicles on the road - and to do it by 2015 - could easily have been heard and then forgotten.
The water flowing from the North Atlantic into the Arctic Ocean is the warmest it's been in 2,000 years, say scientists.
City 2046. Art, life and ingenuity. These were the themes for the ninth annual Michelin Design Challenge, an international automotive design competition for individual designers, teams, studios, and companies.
It's a little on the bijou side - but a research team has created an energy-efficient dolls' house which can send alerts if its residents are ill.
Volkswagen has created what it calls the world's most economic car, running for 313 miles on a single gallon of diesel.
Much of the dispersant used to combat last year’s Deepwater Horizon oil spill still hadn't degraded months after it was applied.
The name is a take on the words 'ecological and 'local,' but to many, the Ecoloco concept may sound just plain loco: a sustainable subway system that harnesses the air displacement created by its movement to power itself.
Bugs are probably the most neglected form of protein. The crunchy crawlers may be gross to some, but to others they are a perfectly acceptable thing to eat. But will fried cockroaches and chocolate covered ants be the next big thing in the world of gastronomy?
Thousands of jobs and lots of money in exports - according to General Electric, that's the payoff for the U.S. economy from five joint ventures the company plans to do with Chinese partners.
Developing economies such as China, Russia, India and Brazil currently account for around 50 percent of the world's energy consumption.
Last year's melting of the Greenland Ice Sheet was the worst ever recorded, according to research from the City College of New York.
Waste heat, the byproduct of all kinds of machinery and processes, has long been seen as a potential source of energy - if only the capture-and-convert process could be made more efficient.
It's all about the mission. That's been the overriding message from the various branches of the U.S. military as they pursue renewable-energy solutions - and Marines in Afghanistan are providing real-world evidence to back that up.