Every time we fly, drive, or turn on a light switch, we generate carbon dioxide the carbon emissions that cause global warming. But each of us can undo some of that damage by investing in carbon offset (the funds usually benefit renewable energy projects like wind power and greenhouse gas reduction). Think of it as paying your energy toll.
TerraPass and DrivingGreen.com are two sites that help you calculate your emissions based on car model and mileage or flight distance. DrivingGreen.com even lets you figure out how to offset your events. (You might rethink that destination wedding.)
If you are not up for doing the calculations, you can leave the math to someone else: Silverjet, the new all-business class British airline, bills itself as the first carbon neutral airline. Included in every ticket price is a carbon offset fee, which allows customers to reinvest earned carbon points in various green projects around the world. Pretty Nifty! Now get out there and spread the word Earth Day is April 22nd!