In 1798, there were about a billion people in the world and economist Thomas Malthuspredicted that overpopulation would lead to war and famine. In 1968, at 4 billion people, experts published The Population Bomb and The Limits to Growth and predicted the same thing.
Today, in 2014, there are over 7 billion people on the planet. Nevertheless, global poverty and violence are at all-time lows. Even carbon emissions are dropping (at least in the US). It seems the that experts were mistaken.
Finish reading the article here:
https://www.forbes.com/sites/gregsatell/2014/02/19/why-experts-always-seem-to-get-it-wrong/?fbclid=IwAR0fWKeGL3zTfrQv620bUd5knXS2Gjhc0vKweYJfDhnzF3BcqS3tbQvXQC8#5a526aa53a36