excuse me, yes, I intended to write UN-inhabitable. Its a fear I think is well founded considering global poisoning of air and water, CO2 emissions, uncontrolle

excuse me, yes, I intended to write UN-inhabitable. Its a fear I think is well founded considering global poisoning of air and water, CO2 emissions, uncontrolled population growth and threats to global food production capabilities, and alarming rate of rogue nations with nuclear missiles. Give that another 200 years to take us to the brink. Humans are great at exploration (continents or space), but lousy at stopping or changing their own behavior.