25:45 Science & Technology What the fossil fuel industry doesn't want you to know - Al Gore Lesson duration 25:45 781,193 Views
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18:12 Environmental Science TED Prize wish: Protect our oceans - Sylvia Earle Lesson duration 18:12 49,984 Views
19:20 Environmental Science Time-lapse proof of extreme ice loss - James Balog Lesson duration 19:20 75,253 Views
