Sylvia Earle
b'As the health of our oceans go, so goes the health of our planet. But climate change, overfishing and pollution have taken their toll \\u2013 what can we do to help? Sylvia Earle, National Geographic Explorer in Residence This program was recorded in front of a live audience at the Commonwealth Club of California on May 27, 2015.\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'