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Freedom 7

Photo: Launch of Freedom 7
Freedom 7, the first American manned suborbital spaceflight, lifts off from Kennedy Space Center in Florida on May 5, 1961, with astronaut Alan Shephard aboard. The main scientific objective of this and other Mercury Program missions was to assess human capabilities and tolerances in space.
Photograph courtesy NASA

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Photo: Hot spring in Ethiopia's Danakil Depression

Pathways to a Greener World

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2008 Grand Prize Winner

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