Video: Buzz Aldrin's 'Magnificent Desolation'

In this video, Apollo 11 astronaut Buzz Aldrin about the historic anniversary of his mission's lunar landing, the reasons why the United States should spend money to try to go to Mars, and his new book, Magnificent Desolation.

In this CBS News video, Bob Schieffer speaks with Apollo 11 astronaut Buzz Aldrin about the historic anniversary of his mission's lunar landing, the reasons why the United States should spend money to try to go to Mars, and his new book, Magnificent Desolation.