Humans want more and more all the time, which seems like bad news. Aren't we going to use up all the natural resources and pollute the Earth as we keep growing? MIT scientist, Andrew McAfee, advocates that the answer is actually "no." Evidence from America shows that, amazingly enough, we are now dematerializing: using fewer resources year after year and treading more lightly on the planet. Learn more at http://www.tedxcambridge.com
