Science Advisor to the President War II by President Franklin Delano Roosevelt. Vannevar Bush chaired this office through Roosevelt's death in 1945, and continued under Roosevelt's successor Harry S. Truman until 1951. After the war, President Harry S. Truman replaced the OSRD with the Science Advisory Committee in 1951. The office was moved to the White House on November 21, 1957, by President Dwight D. Eisenhower to provide advice and recommendation in response to the Space Race started by the USSR's launch of the first artificial Earth satellite, Sputnik 1. President Richard M. Nixon eliminated the PSAC in 1973, rather than appointing a replacement for
Doctor Who in Canada and the United States In the interim, however, Series 1 was picked up by Sci Fi, so while the Canadian DVD release went ahead as scheduled the US DVD release was pushed back to 4 July 2006. Series 1 began airing on Sci Fi on 17 March 2006. In the Sci Fi Channel's broadcasts of Series 1, the episodes (which appear to run off the same master tapes used in Canada) were edited for time, and for added commercial breaks, although the cuts made for US broadcast appear to differ from those made for Canadian television. With commercials, the total runtime per episode is