> > The single most important job humanity has is to get our eggs into more than one basket. > The single most important job for humanity right now is to save

> > The single most important job humanity has is to get our eggs into more than one basket. > The single most important job for humanity right now is to save this one planet we have from destruction. Aren't these two sides of the same coin? If we colonise Mars, but leave Earth a smoking ruin, then we've made things worse by trading a planet with a function biosphere for one without. If we wait till Earth is in perfect state before colonising another planet, we'll never leave, and be subject to many of the same risks.