This documerntary was produced in 2004 by CBS as part of "Witness", a documentary from CBS news. Origin of AIDS: The Polio Vaccine (CBC 'Witness', 2004) On April 12, 1955 Jonas Salk's polio vaccine was first licensed for public use in the U.S. In the years afterwards 90 million Americans were vac...

On June 14,2013 SpaceX's Grasshopper flew 325 m (1066 feet)--higher than Manhattan's Chrysler Building--before smoothly landing back on the pad. For the first time in this test, Grasshopper made use of its full navigation sensor suite with the F9-R closed loop control flight algorithms to accomplish...