Alanis Morissette hosts this examination of reasons why "it's not your grandfather's climate anymore," as meteorologist Kenneth Trenbarth puts it. Trenbarth and other scientists cite evidence ranging from too much water in Louisiana (there's a post-Katrina update) to too little rain in Colorado and less snow on Mount Kilimanjaro. The hour also follows a bike messenger as he breathes dirty New York City air; and visits China, which will likely be using more oil than the U.S. in a few decades.
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