May 18, 2009, 2pm PDT
The Obama administration has announced that it will issue new emissions and mileage requirements for cars and light trucks tomorrow to create a single national standard.
February 3, 2009, 12pm PST
In an effort to improve gas mileage, 400 drivers in Denver participated in an experiment that tracked and reported the bad driving habits -- idling, rapid accelerating and braking -- that waste fuel. Faced with the data, driving habits have changed.
July 9, 2008, 11am PDT
<p>The 'Nano', a tiny car that gets 47 miles to the gallon and has low emissions, is hitting the Indian market. Environmentalists worry that the car's advantages will be outweighed by the increase in car ownership it may bring to the country.</p>