1) self-sustaining space travel is more likely to be achieved by AI/robots, DNA or biological beings in general aren't well suited to space travel
2) Humans are the animal that have the highest risk of making the Earth uninhabitable before anything that can be self-sustaining leaves this planet
1) self-sustaining space travel is more likely to be achieved by AI/robots, DNA or biological beings in general aren't well suited to space travel
2) Humans are the animal that have the highest risk of making the Earth uninhabitable before anything that can be self-sustaining leaves this planet