World News Podcast - December 5th, 2012

In tonight's podcast, a new study by the nation's top scientists shows a global thawing that could have global consequences. ABC's senior political correspondent Jim Avila tells us why reverse mortgages should be the last option for older Americans. And, Kate Middleton was the latest victim of prank callers pretending to be celebrities in order to talk to other celebrities. This and more in the World News Podcast.

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