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China's mammoth Yangtse River will soon be controlled by the largest dam ever built, but the edifice is still not strong enough to quell the tide of corruption. Ian Williams of Independent Television News reports on some of the human…

Four decades after the height of the space race between the United States and the Soviet Union, China became only the third country to launch a person into orbit. Ian Williams of Independent Television News reports on the Chinese entry…

Two biochemists were honored with the Nobel prize for chemistry in recognition of their discoveries of the tiny channels that let vital substances move through cell walls. Margaret Warner talks to Peter Agre, one of the prize recipients.

Western regions of the United States continue to cope with the decimation caused by the lack of rain. Ted Robbins of KUAT in Tucson, Ariz., provides an update on the drought.

Early this morning, Mars had its closest encounter with Earth in 60,000 years, giving observers the best view of the red planet in their lifetimes. Terence Smith discusses the event with astrophysicist Neil DeGrasse Tyson.

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