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This March 24, 2007, file photo, shows visitors watching polar bear cub Knut in his first public appearance in the Berlin zoo. Knut, the first polar bear born at the zoo for more than 30 years, was rejected by his mother and fed instead by his keeper, Thomas Doerflein. After becoming a global celebrity as a cute cub, he died in the Berlin zoo on March 19, at age 4. Arnd Wiegmann/Reuters/File
Stuffed Knuts, candles, and flowers lay at the entrance of the Zoo to commemorate late polar bear Knut in Berlin on March 20. Hundreds of fans of polar bear Knut flocked to lay flowers outside his zoo enclosure, mourning the sudden death of a bear who burst into the limelight as a cuddly, fluffy cub hand-fed by his keeper. Markus Schreiber/AP
A toy Knut lays between flowers at the polar bear enclosure to commemorate late polar bear Knut at the Berlin Zoo on March 21. Markus Schreiber/AP
An information board is decorated with items to remember polar bear Knut, at the polar bear enclosure in the Berlin zoo on March 20. Tobias Schwarz/Reuters
In this Jan. 6, 2009, file photo, polar bear Knut enjoys the cold weather in his enclosure at the Berlin Zoo. Johannes Eisele/Reuters/File
In this Dec. 5, 2010, file photo, polar bear Knut stands behind his 'birthday cake' to celebrate his 4th birthday in the Berlin Zoo. Michael Sohn/AP/File
Polar bear Knut shakes water out of his fur in the Berlin zoo on Oct. 25, 2010. Maya Hitij/dapd/AP/File
Polar bear Knut plays with snow balls at his enclosure at the Berlin zoo on Feb. 17, 2009. Michael Sohn/AP/File
Polar bear Knut enjoys the cold weather in his enclosure at the Berlin zoo on Jan. 6, 2009. Johannes Eisele/Reuters/File
Polar bear Knut is seen as he plays in the water in his enclosure on Sept. 4, 2009, in Berlin. Maya Hitij/AP/File
In this March 23, 2007, file photo, Knut has his first public appearance with his keeper (unseen) in the Berlin zoo. Markus Schreiber/AP/File
In this March 23, 2007, file photo, Knut has his first public appearance with his keeper (unseen) in the Berlin zoo. Herbert Knosowski/AP/File
In this March 23, 2007 file photo, Knut drinks water during his first public appearance in the Berlin zoo.
In this March 23, 2007, file photo, Knut has its first public appearance with his keeper, Thomas Doerflein, in the Berlin zoo. Herbert Knosowski/AP/File
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Mountaineering officials say 64 climbers, including a Saudi Arabian woman, have successfully scaled Mount Everest from Nepal's side of the mountain.
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