President Barack Obama delivers remarks at UN Secretary General Ban Ki-moon's Climate Change Summit.
President Barack Obama delivers remarks at UN Secretary General Ban Ki-moon's Climate Change Summit. John Angelillo/Abaca Press/MCT
President Barack Obama delivers remarks at UN Secretary General Ban Ki-moon's Climate Change Summit. John Angelillo/Abaca Press/MCT

Politics & Government

September 23, 2009 12:40 AM

U.S. alone can't solve world's problems, Obama tells U.N.

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