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Dr. Elias Zerhouni, director of the N.I.H., is spearheading efforts to speed up the time it takes for laboratory discoveries to be translated into new medical treatments and drugs. Susan Dentzer talks to Zerhouni and other researchers about the proposed…

The NASA rover Opportunity landed in a shallow crater on Mars over the weekend and transmitted back images of a smooth red surface punctured with bedrock outcroppings. Ray Suarez discusses the mission and its findings with Orlando Figueroa, director of…

NASA scientists have not received any transmissions from their Martian rover Spirit in over 24 hours. Jeffrey Brown discusses this setback with Charles Elachi, director of the NASA Jet Propulsion Laboratory in Pasadena, Calif.

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