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MNN's 2009 photos of the year

By: Catie Leary on Dec. 31, 2009, 8:23 a.m.
Knut lurks in duckweed

Photo: Ranier Jensen/ZUMA Press

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Knut lurks in duckweed

Famed polar bear Knut swims in common duckweed on Sept. 14 at the Berlin zoo in Germany.