“Because our species’ time on Earth is very likely to be finite, we should be doing everything…

“Because our species’ time on Earth is very likely to be finite, we should be doing everything we can to colonize nearby worlds — particularly Mars — to increase our odds of survival. Putting a permanent colony of humans on Mars would be an insurance policy against a civilization-ending catastrophe here at home, like an errant comet or an accidental outbreak of thermonuclear war.”

We have a pretty good idea of when humans will go extinct