Collapsology part two Environmental changes Let’s focus on this first element. The first think in mind is global warming but it is not the sole problem, it is more complicated than that. If the temperature rise more than +2°C, the snowball effect will rise the temperature to +4 or 5°C and this would mean the end of the humanity and all life in the planet. I know I look like mister apocalypse but let me explain. The first problem is the ice melt that will rise the level of the sea. Island and coast will be flood. This will kill a lot of people but not everybody. The second problem is farming. It will be more difficult to farm because of the climate. This lack of food will lead to famines and wars. But this will not cause the end of the humanity. There are a lot of others issues with global warming like the feminization of the sea and lot of species will not survives but I don’t have the knowledge to discuss all this problem in detail and I want to expose the most important issue but in a third part.