geothermal

Big Oil Taking Small Steps Toward Big Renewables Profits

The oil industry giants are embracing alternative technologies -- including biofuels, geothermal and solar. Right now, renewable sources provide only a tiny fraction of the profits they derive from oil and gas, but they'll have a real impact on the revenues of majors like BP, Exxon Mobil and Chevron in the not-so-distant future.

Delayed and Shrinking: Masdar City Scales Back Its Clean-Energy Plans

Masdar, the $22 billion green city that United Arab Emirates capital Abu Dhabi is building in the desert just outside its borders, has canceled its plans to generate all of its own clean energy and to emit zero carbon -- and says it's running at least four years behind schedule.