Search for tag: "over population"

World Scientists' Warning to Humanity: A… duration 29 minutes 33 seconds World Scientists' Warning to Humanity: A… World Scientists' Warning to Humanity: A Second Notice	World Scientists' Warning to Humanity: A Second Notice Distinguished Professor Bill Ripple speaks to Corvallis High School, Earth Day Celebration, April 21, 2018 over population ozone layer depletion greenhouse gas effect fossil fuel pollution polar ice melting rising oceans From William Ripple 77 plays
World Scientists' Warning to Humanity: A… duration 31 minutes 7 seconds World Scientists' Warning to Humanity: A… World Scientists' Warning to Humanity: A Second Notice	World Scientists' Warning to Humanity: A Second Notice Distinguished Professor Bill Ripple speaks to Corvallis City Club, Feb. 13, 2018 Bill Ripple is the director of ERSAL \| Forest Engineering, Resources &… over population planetary climate change fossil fuel pollution polar ice melting ozone layer depletion greenhouse gas effect From William Ripple 148 plays