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Vol. 344 ,
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Podcast: Expanding Leeches, America’s Earliest Dogs, and Misbehaving Planets
13 May 2011 2:19 pm
How do leeches wriggle on a full stomach? Were the first American dogs companions or dinner? And why do some planets orbit the “wrong way”? Science's Online News Editor David Grimm chats about these stories and more with Science's Online Editor Stewart Wills.