I had a fun thought tonight during meditation…You know how at first life developed in the oceans, and eventually creatures developed lungs for air? Well, the other day I heard it said beautifully that we live at the bottom of an ocean of air. So, theoretically, if the edge of our planet's atmosphere is the top of the ocean, and we keep jumping to the top like amphibians, eventually we may adapt to be able to live in space. If we can condition ourselves to live colder and with less oxygen and gravity, who knows? It may just be the next leap in evolution!