Hurricane Sandy has renewed the debate over climate change in the United States, and two high-profile reports released since the storm have made it clear that without big changes we're headed for an extremely serious climate disruption. Reporter Sam Eaton takes a look at what would have to happen to avoid the most catastrophic effects of global warming. This podcast was produced by Sam Eaton for NOVA and PRI's "The World." For more global environmental stories, visit: http://www.pbs.org/wgbh/nova/earth/ http://www.theworld.org/category/topics/environment/ NOVA is produced by WGBH in Boston. Funding for NOVA is provided by David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and PBS viewers.