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Tue, Apr 15, 2014 -- 9:00 AM

Could Geo-Engineering Cool Our Warming Planet?


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Spencer Platt/Getty Images
Buildings near South Street Seaport, an area of lower Manhattan that was severely flooded during Hurricane Sandy in New York City.
Spencer Platt/Getty Images
Buildings near South Street Seaport, an area of lower Manhattan that was severely flooded during Hurricane Sandy in New York City.

In a report released this week, the Intergovernmental Panel on Climate Change said it will take very ambitious efforts -- a reduction in greenhouse gas emissions by up to 70 percent by 2050 -- to keep climate change at acceptable levels. The dire predictions have some asking whether it's time to think about geo-engineering: an attempt to use large-scale, high-tech methods to cool the planet. These ideas have included launching giant mirrors into space or fertilizing the oceans with iron to stimulate phytoplankton growth.

Host: Michael Krasny

Guests:

  • Ken Caldeira, climate scientist at the Carnegie Institution for Science's Department of Global Ecology at Stanford University
  • Craig Miller, science editor for KQED
  • David Winickoff, associate professor of bioethics and society in the Department of Environmental Science, Policy & Management at UC Berkeley

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