The downside of biodiesel fuel

The oil industry believes biodiesel is not to blame for problems that Norwegian car owners are experiencing. But the nature of the fuel means that it has to be handled differently than regular petroleum-based diesel, a Norwegian ...

Mexico City offers bikes in its clean air campaign

(AP) -- Pedaling placidly, black-suited businessmen and women in dresses and high heels wheel shiny red bikes between growling green buses, serenaded by shrill police whistles and coughing diesel trucks, the morning sunlight ...

Carnival to cut pollution from cruise ships

The world's largest cruise ship company will adopt technology from power plants and automobiles to reduce air pollution from the massive diesel engines powering its ships.

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