Reps from the 4 major U.S. sports leagues—NFL, NHL, NBA and MLB—went to Washington, D.C. recently to talk about their leagues’ greenhouse gas emissions. This gives me hope that sustainability will get some much-needed cred and visibility. Because if you really want to catch peoples’ attention and change their actions, you need more than the right message. What you need is the right messenger too. Preferably a talented, famous person whom millions of fans look up to.