Sherry Borschert, President of the San Fransisco Electric Vehicle Association demonstrates her all electric vehicle and lists how a car like hers is beneficial.

There are some eco-friendly cars emerging from the 2007 Detroit Auto Show. So why are big trucks still stealing the spotlight?

Who would’ve thunk it. Prime Minister Tony Blair and California Gov. Arnold Schwarzenegger, meeting in Long Beach, Ca., announced this week that they’ve forged an agreement to work collaboratively against global warming. While the import of the agreement is not fully clear—and while some critics derided it as a “symbolic gesture”—it nevertheless adds momentum to a movement already underway.

Wouldn’t it be nice to have an at-a-glance reference guide to top 100 companies with the world’s best environmental strategies, so that when you hit a gas station, run to the grocery store, buy a car, or choose your investments you can do so with a clean, green conscience? You’re in luck, according to Greenbiz.com.

Here's an encouraging sign – or rather, billboard: Cruise down the 405 Freeway in El Segundo, California and you'll see a giant billboard with a panel of numbers clicking forward every four seconds, approximating the millions of gallons of gas that have been saved in the U.S. since 2000 thanks to the Toyota Prius and Lexus RX 400h SUV – hybrid-engine vehicles that are selling like hotcakes in America.

Good news for clean-energy optimists: The dramatic array of lean, green driving machines on display at the Tokyo Auto Show recently provided ample evidence that humanity can, indeed, innovate its way out of environmental problems. Once every two years, major players in the auto industry convene in Tokyo to give the public a glimpse of their most futuristic automotive designs—dazzling concept cars that look borrowed from the set of The Matrix or swiped from the garage of George Jetson.

This year they all had one thing in common, aside from snazzy space-pod designs: fabulous fuel economy.