This is mostly bunk. I'm not going to go through the whole thing, but I'll take the third video as an example: First, the graph the author has drawn obviously

This is mostly bunk. I'm not going to go through the whole thing, but I'll take the third video as an example: First, the graph the author has drawn obviously isn't exponential. The graph is too flat and rises too quickly, but it certainly is scary. Second, global population growth is declining, and going towards zero. In some East European countries it's already negative. Third, this has already been discussed by Thomas Malthus back in the 70's and dismissed. This looks like someone who doesn't quite grasp the complicated machinery of economy, people and energy and tries to explain it using pocket philosophy.