Massive wars will break out over climate refugees invading the least affected areas. Billions will die and those left will be trying desperately to rebuild society. Nuclear contamination will be a real problem after nukes are used by middle East countries completely out of fresh water that Western countries are hoarding. Corporations will be outlawed after Nestle attempted to create a water monopoly and massive revolt saw their board murdered in public by a mob. Humanity will be 1/10th the population of today.