How (and why) SpaceX will colonize Mars

This is a fascinating article about Elon Musk’s SpaceX project.

A snippet:

NASA took notice. The successful fourth launch was enough evidence for them that SpaceX was worth trusting, and at the end of 2008, NASA called Musk and told him they wanted to offer SpaceX a $1.6 billion contract to make 12 deliveries for them to the ISS.