I believe that humanity will survive. This allows for the deaths of billions, the destruction of massive areas of the ecosystem and even the development of enclosed cities as the outside is too toxic for 100's - 1000's years. The envoronment will recover - it has several times before. Species diversity again can either recover naturally or we can give it a prod. With all the carcinogenic pollutants it would be far quicker as a result. After all animals are nesting in Chernobyl - we humans are afraid every time one of us drops dead. Nature plays the numbers game.

Deaths in the floods were less than those who died in DIY. I don't think that DIY is going to ruin the UK either. Deaths in France was mainly the elderly. Again, the fact they are alive is testamony to the success of medicine; their loss is one that society can easily take - and is probably fitter for doing so.

Rosey? Probaby not. But we are adaptable, and as things get worse we will find ways around the problem. Indeed, we get lazy when there isn't a problem to be "fixed".