Sustainability

Pressure from the government to cut emissions of greenhouse gases and toxins has engine-makers taking a closer look at how new fuels combust

The co-founder, president and chief technology officer of Solazyme weighs in on the hurdles facing his industry

California regulators may rule that the biofuel is no better--and might be worse--than petroleum for solving climate change

The chairman and CEO of AE Biofuels weighs in on the hurdles facing his industry

What are the options for decreasing demand for oil and lowering greenhouse gas emissions in cars and light trucks?

Urban areas around the world strive to lessen their environmental impact

The U.S.'s first commercial jet flight powered by biofuel runs one engine on African weed mixed with a smidgen of algae

World's second commercial jet flight on biofuel relies on African weed

Even Bill Gates thinks the future of biofuels is not corn, or even cellulosic ethanol, but algae

One short hop for jet travelers, one (giant?) leap for biofuel-based jets

Lawn clippings and unrecycled paper could help break the world's oil addiction

Two studies in the latest issue of the journal Science say that producing biofuels may actually produce more carbon dioxide than we would with conventional fuel. Karen Hopkin reports.