Earth to warm more quickly, new climate models show: By 2100, average temperatures could rise 6.5 to 7.0 degrees Celsius above pre-industrial levels if carbon emissions continue unabated

The problem isn't what happens in the first world. The first world will be fine for a while because of things like AC for example.

It starts with the most vulnerable people in the world. When their land becomes uninhabitable (think very poor coastal countries, desert civilizations, etc.) they will have to migrate.

When the migrations start becoming a burden on neighboring countries, they'll start to close their borders.

And that's when the real shit starts, because you can't expect people to go quietly die in their overheated country. There will be violence, there will be uprising, there will be wars. The Resource Wars, they might be called.

Once that starts, it's a chain reaction that will upset society as we know it, just like any other great war. It starts somewhere relatively small and grows and grows until millions have died and the world is never the same.

/r/worldnews Thread Parent Link - phys.org