TerraPass now offering CO2 offsets for air travel

TerraPass has joined a number of other companies in selling carbon dioxide offsets for air travel. They've teamed up with Expedia and have an emissions calculator that allows you to determine how much CO2 your flight will produce and then purchase an appropriate TerraPass to offset those emissions.

I'm flying to New York next week for a fitness training workshop and bought a TerraPass for $9.95 to offset the nearly 2000 pounds of CO2 that my seat on the flight will produce.