Saving Ourselves

Former astronaut and current associate administrator of NASA John Grunsfield hopes the rise of space tourism will lead to more concern for Earth's environment as more and more people see the home world from the perspective of space.

Grunsfield, who flew on five shuttle missions, says Earth has changed markedly since the early days of manned spaceflight-- and not particularly in good ways.  As pictures of Earth from space helped push the environmental movement decades ago, he hopes more people from various walks of life getting access to space will lead to greater concern over Earth's future-- and our own.