Nobel Peace Prize laureate Al Gore, left, his wife Tipper, second from left, Nobel Peace Prize co-winner Dr. Rajendra K. Pachauri, right, Chairman of the U.N. Intergovernmental Panel on Climate Change, and his wife Saroj, second from right, greet members of the public Monday from the balcony of the Grand Hotel in Oslo. Al Gore accepted the Nobel Peace Prize on Monday and called on humanity to mobilize at once against the dangers of a changing climate.

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