no sunshine...

It would mean extinction. let me know if there is a solution.

hard to...

helium is hard to fuse in the sun. when hydrogen fuel become too low,fusion will stop. the sun will go dark for a long long time.

some jokes...

the economy did not collapse. so we can boldly go where we should go !

deep sea vent...

the hot water in deep sea vent can be directed to the surface using pipeline technology. lot of energy in the hot water.