The Pentagon has made it clear that its "Buy American" policy will be in effect for solar panels — which means Chinese-made solar panels are no longer acceptable for US military installation in the US and abroad.
Japan's prime minister has unveiled a plan to restart the country's nuclear energy program almost three years after the Fukushima disaster. But given the country's deep divide over nuclear power, the plan is short of specifics and retains a commitment to developing renewable energy sources.
Ethanol has largely fizzled here in the US. But in Brazil, people have been driving their cars for years powered only by sugarcane ethanol. In recent years though, ethanol in Brazil has hit a speed bump.
The nuclear accident at the Fukushima Daiichi power plant is considered the second worst nuclear disaster in history. Science journalist, Geoff Brumfiel has been writing about the Fukushima disaster for Nature magazine. He spoke with Marco Werman.
The World's Rhitu Chatterjee reports on some of the obstacles to India's ambitious plans for nuclear power. There are concerns within India about liability in the case of accidents and land takings to build the plants.
A group of military veterans is barnstorming across America on a bus. The veterans are calling on US leaders to get the nation running on clean energy. The World's Jason Margolis took a ride on the bus.
Computer servers at big data centers around the globe generate a lot of heat. A company in Finland has figured out a way to capture that wasted energy and use it to heat homes. The World's Technology Correspondent Clark Boyd has the story from Helsinki.
From the South Sudanese capital Juba, Matthew Brunwasser reports on the role of oil in Sudan's recent history. Now the south may take the majority of wells if the referendum currently under way results in an independent South Sudan.