Wanderers: a short film of humanity's expansion into the Solar System [video]
Frustrating to realize that perhaps only 1 or 2 years of Earth's military spending would enable mankind to achieve this (approx $1700 billion/year). Not saying we don't need to spend money on defense, merely taking one the world's expenditures as a yardstick. It would be so great if mankind is able to cooperate in the colonization of our solar system.