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Running Out of Energy
00:46

Running Out of Energy

Paul Ehrlich, best known for his work on population growth, explores the issue of energy and availability of fossil fuels. According to Dr.Ehrlich, the biggest threat posed by reliance on such fuels is not running out of them but, rather, their nega...

Alternative Sources of Energy
01:11

Alternative Sources of Energy

Paul Ehrlich, best known for his work on population growth, discusses solar hydrogen technology as an alternative to fossil fuels and nuclear energy.