This afternoon, President Barack Obama will present 16 people with the Presidential Medal of Freedom. It is the highest honor that can be awarded to a civilian. Among this year's honorees are Archbishop Desmond Tutu, Stephen Hawking, U.S. Sen. Edward Kennedy, tennis legend Billie Jean King, and retired U.S. Supreme Court Justice Sandra Day O'Connor. Also receiving a medal tonight is Ambassador Nancy Goodman Brinker, founder of Susan G. Komen for the Cure, the largest breast cancer awareness organization in the world. She has just been appointed as the first "Cancer Ambassador" to the World Health Organization and she tells about her work and the award.

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