[b_emery]

I dont doubt that it is a threat, but disagree that its the greatest threat. I think it will have costs and that the 1st world will be able to (reluctantly) afford these costs. Its the people who cannot afford the costs that will suffer, due to reasons listed below, such as disease, food and water supply, etc.

I'd list accidental nuclear war as the greatest threat to civilization, fwiw.

[zbyte64]

If a 2nd world country with nuclear weapons cannot adapt to climate change, then nuclear war becomes more likely...