Last year, researchers at George Washington University proposed a method for transforming CO2 emissions into carbon nanotubes (CNTs). When applied to power plants, the technology could completely eliminate the power plants' CO2...

Back in the early 1970s, Denmark got almost all its energy from imported oil. Then came the oil crisis, which, naturally, had a big impact. Political discussions throughout the '80s resulted in...

Solar City, the solar energy company whose largest shareholder is Tesla Motors chief executive Elon Musk, has picked batteries made by his electric-car maker to provide 13 megawatts of electric storage for...