NPRDec 18, 2016A Planet With Brains? The Peril And Potential Of Self-Aware Geological Changeverified_publisherNPR - David GrinspoonRecent years have seen a vigorous debate over whether or not we have entered a new epoch of geologic time, the "Anthropocene," characterized by humanity as a new geologic force. Much of this has centered over when this age began. Three candidates for this include: an "Early Anthropocene" many …