Nation Jul 24 Watch Sally Ride, 61, Left Major Imprint on Space Program, Inspired Young Scientists Sally Ride, 61, Left Major Imprint on Space Program, Inspired Young Scientists…
Politics Jan 13 Chu Vows to Fight Global Warming at Confirmation Hearing Nobel-prize winning physicist Steven Chu said at a hearing Tuesday that if he is confirmed as energy secretary, he plans to aggressively pursue policies to combat global warming. By Admin, PBS News Hour