September 11, 2013
Inevitable and necessary (that ball of gas will kill us all one day).
Survival. Development of new technologies to deal with the less than earth-like environment.
Hard to tell, the surface is similar to the crust on earth and we only find a few veins here and there. The moon had little vulcanism. The core is iron, so it might make sense to excavate on the moon to build larger crafts in near zero-g.
Network engineer/web developer with a strong interest in cosmology and astronomy. Card-carrying Planetary Society member. Yey NASA!