The U.N. warned us: We have 12 years before the damage we’ve done to the Earth becomes irreversible. Instead of letting reports like this paralyze us, let’s use them to empower us. The experts are saying it’s going to take a mix of large-scale change AND individual action to save our planet—and we want to help you do what you can. Consider our new series your no-excuses guide to cleaning up your act, one step at a time. Today, we’re starting with a tip for cleaning up your holiday travel habits.