20 May Buzz Aldrin on Why We Should Go to Mars
The Apollo 11 astronaut who walked on the moon dreams of a future where Americans are the first to walk on Mars Read more: http://www.smithsonianmag.com/science-nature/Buzz-Aldrin-on-Why-We-Should-Go-to-Mars-208127601.html#ixzz2TqxDu0ij Follow us: @SmithsonianMag on Twitter...