I'll agree that we should quadruple NASA's budget or more. The major threat is an asteroid impact and we're blind figuratively and actually. We need mo' bigger telescopes to identify which ones are on a collison course. Then we'll maybe have time to do something about it.
Maybe put some miners out in the asteroid belt to push those rocks around into more stable orbits first. Then we can go after the real bad ass threats out in the Oort Cloud, comets. Slow them down and drop 'em on Mars.
