Your Questions About Sustainable Energy Solutions

Should nuclear power plants should be strictly forbidden around the world?

Then people need to resort to other things such as Thermal heat
Very deep in the earth, transferring up the heat and operating turbines and producing energy.
This is absolutely harmless and has no residues that would be dangerous for nature or for people or the animals. Practically an energy that can be used indefinitely.

http://www1.eere.energy.gov/geothermal/powerplants.html

If overpopulation of the world began to cause massive humanitarian, and environmental problems?

would it be best to introduce something covertly to control fertility?

I know it seems a tad barbaric, but would it be better than the consequences of worldwide famine and disease?

I ask this without it meaning to sound as my opinion for a solution.