In February 2007, an international panel of 1,000 scientists concluded unequivocally that humans are responsible for the greenhouse gas emissions that are warming the earth's climate and could eventually trigger catastrophic global weather changes. Since the problem is global, environmentalists say finding a solution must also be a worldwide undertaking. First, people must act locally, and in this context, one college at a time. One group of college administrators is leading the charge, helping colleges and universities take steps to "equip society to re-stabilize the earth's climate." This article features the nonprofit American College & University Presidents' Climate Commitment, which currently has more than 150 signatories, each pledging to help eliminate their campuses' greenhouse gas emissions over time and to integrate sustainability into their curriculum's. The group's goal is to have 1,000 or more presidents sign the commitment by 2009. As part of the commitment, institutions must complete an emissions inventory and set a target date and milestone markers for becoming climate neutral within two years.