04:55duration 4 minutes 55 seconds
How climate change is making inequality worse -…
How climate change is making inequality worse - BBC News
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06:29duration 6 minutes 29 seconds
How could veganism change the world The…
How could veganism change the world The Economist
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01:07:18duration 1 hour 7 minutes
2013 Boyer Lecture - David Orr
Lecture at 2013 All College by Dr. David Orr