Global warming and overpopulation are two biggest scams of the century?

First of all even in developed nations we only use a tiny fraction of our available land mass. In 3rd world countries it is many times smaller. Overpopulation is a scam and a fraud. Only certain large cities in the world have this problem. There is more than enough room to go around. As for food just grow more crops with the vast expanses of land available. Global warming is not manmade didn't you all see the documents from scientists saying they blew it out of prorportion?