One step forward to cloning humans?
Scientists who helped engineer the first cloned sheep are close to generating human plasma from animals, a newspaper reported yesterday.
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Martian soil encounters first set of wheels
Sojourner, Nasa's six-wheeled rover the size of a microwave oven, inched down a metal ramp and on to the frigid Martian soil on Saturday night, becoming the first mobile vehicle to roll on to another planet.
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