No doubt the biggest problem in our world is overpopulation. Its basically the root of all troubles we are struggling with, like environmental destruction, starvation, violence, migration waves ect. If all the people in Asia and Africa demand the same standard of living as we have in the west (and why shouldn't they?) we are screwed.
Real problems, the truth you are talking about? How about the U.S.A. pulling its troops out of countries where they don't belong, And the White House helping terrorist bring down a government in Syria again where they shouldnt be. AMerica fix up your own affairs before even sticking your nose into others affairs abroad.