This month, after a two-decade deadlock, the world made a game-changing move in the battle against global warming at the United Nations climate summit in Lima, Peru: All countries present committed to cut greenhouse gas emissions for the first time ever. A final treaty won’t be reached until the Paris talks next December, but it’s a welcome end-of-year gift for the planet.
The news sets up the environment for a good start in 2015. Keep the ball rolling by doing your part during the holidays, when U.S. households throw away 25 percent more trash than at any other time of the year. Click through for 10 tips for celebrating sustainably.