Photo: #Dr. Hansen helped raise awareness of global warming issue with his testimony on climate change to congressional committees in the 1980s.
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Dr. Hansen helped raise awareness of global warming issue with his testimony on climate change to congressional committees in the 1980s. (NASA)

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The cost of global warming

Broadcast: Midday, 09/25/2007, 11:00 a.m.

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A researcher who has been instrumental in raising awareness about global warming since the 1980s discusses what climatology research is revealing about our planet.

Guests

  • James Hansen: lead climate scientist at NASA's Goddard Institute for Space Study. He is also currently an adjunct professor in the Department of Earth and Environmental Sciences at Columbia University and a member of the National Academy of Sciences.

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