Manned Missions, Geoengineering and Planetary Protection : How Safe is Safe Enough?
If we ever decide to start geoengineering another world, and maybe even terraform a world that is not presently habitable for humans, it is also highly probable that it will become less habitable for any indigenous life. Making sure, or at least trying to determine the probability that a potentially habitable world is in fact uninhabited will thus be an important step before we start any geo-engin
