Science

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Citing national security concerns and years of scientific study, President Bush today approved plans to store thousands of tons of radioactive nuclear waste in Yucca Mountain in Nevada, 90 miles from Las Vegas.

Susan Dentzer charts the progress of burn victim Kevin Shaeffer, who was badly burned in the September 11th Pentagon attack, and assesses the scientific advances contributing to his recovery.

After a Spencer Michels report on NASA's evolution in the past decade, Ray Suarez talks to former NASA Administrator Daniel Goldin about his pivotal role in the space agency's history.

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