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Posted at 03:45 PM ET, 03/21/2011

In other news: Vets seek cause of death for polar bear Knut, Nancy Pelosi hospitalized in Rome

Newt and Knut: Newt Gingrich poses with the baby polar bear in 2007. (Callista Gingrich/Gingrich Prod)

•Veterinarians at the Berlin Zoo began an autopsy Monday on Knut, the superstar polar bear who died suddenly Saturday afternoon in front of several hundred visitors. Shocked zookeepers said the 4-year-old bear appeared healthy; an amateur video shows him shaking and collapsing into a pool, then going limp. Knut was the zoo’s top attraction: Rejected by his mother at birth, the cub became an international sensation, appearing with Leonardo DiCaprio on the cover of Vanity Fair and Newt Gingrich. A spokeswoman for the zoo said results of the post-mortem tests would be released only “when we know what the exact cause” of death, reports AFP.

• Nancy Pelosi was briefly hospitalized in Rome Monday after feeling “slightly unwell.” The House Minority Leader, who spent the weekend visiting troops in Afghanistan, was tested and released. “Thanks to everyone for your well wishes -- had a very productive trip to Afghanistan and am in Italy resuming meetings now,” she tweeted

By  |  03:45 PM ET, 03/21/2011

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