Coalition for Space Exploration board member, Dr. Paul Spudis, finds the U.S. too willing to give up its leadership in space exploration as he traces the steps leading up to the proposed Space Exploration Initiative of 1989 and the Vision for Space Exploration in 2004. In each instance, a blue print for the human exploration of the moon and Mars was overturned with the election of a new presidential administration. Read the full article at the Smithsonian Air & Space blog.