The long, winding road to renewable energy

As President Bush revs up a push for ethanol and fuel economy, the Clean Tech Investor Summit takes stock of the energy landscape.

Why it's not easy being green

Consumers, not technology, are the big barrier to curbing energy consumption and greenhouse gas emissions.
January 24, 2007

Bush pushes energy regulations, ethanol

State of the Union address calls for renewable energy and higher fuel standards for cars. But the Iraq war was on everyone's mind.
January 23, 2007

The underground option for CO2

There's growing momentum behind the idea of turning the carbon dioxide spewed from coal into a liquid or a solid and storing it in caves.
January 23, 2007

MIT-led study finds geothermal energy potential untapped

Heat mining technology can be improved and deployed broadly to generate clean electricity, says an Energy Department-sponsored report.
January 22, 2007

Green tech powers forward

special coverage From solar-powered Wi-Fi to robots fueled by bacteria, researchers are rethinking the way we power our lives.
January 22, 2007

Photos: The solar house that Mike built

Self-sustaining New Jersey home uses solar power during the summer and stores up hydrogen for a rainy day.
January 20, 2007