Children born now may live in a world where the US can only produce half as much of its key food crops

[AZJonnie]

2. That doesn't appear to be factoring in the fact that fossil fuels will start to run out long before 2100

Esp. if world population continues increasing.

This is important because, in a nearly-literal sense the whole world eats fossil fuels. Between the petrol/diesel to run the farm machines and trucks that bring food to market, and the hydrocarbon inputs needed for fertilizers and pesticides, the ONLY reason there are anywhere near 8B people on earth is the energy provided by fossil fuels.

So not only will the climate itself be screwed in terms of crop production, but also the hydrocarbons needed to produce and distribute the food in the first place will start to run out as well (or effectively already have run out by 2100).

Barring some techno-miracle, kids today are F***ED.