This may be a good source of power.
Buy Shade from Space This may be an answer to global warming.
Selling Sunlight This may be as important to the next hundred as dam construction has been to the previous hundred years.
Living on Mars
Earth Crust ShiftI read somewhere that the crust of the earth can shift all as a unit like the skin of an orange. It seems that when the ice builds up on the poles the weight causes the crust to break free of the core and slip around.