Guilt-Ridden Travelers Can 'Pay' For Their Air Pollution

San Francisco International Airport is planning to give guilt-ridden travelers a chance to offset the air pollution emitted from their plane rides.

The airport says it will set up a series of kiosks so travelers can purchase certified carbon offsets. A pilot program is to be launched this spring.

Travelers will enter their destination into the kiosk, which will calculate the amount of carbon dioxide for which they are responsible and the cost of offsetting it. After swiping their credit cards, they would get a receipt listing the exact carbon-reducing projects their money went to.

The program is not the only option that travelers have. Delta Air Lines Inc. offers its customers an opportunity to purchase carbon offsets on its Web site.