But I just had an insight. This also means that our natural history is extremely short. The ecosystem around me is less than 10 000 years old. Before that, 60 000 years of just ice. None of the species around here have evolved in place. Elk grass and elk, wolvesbane and wolf, all recent immigrants. I've lived all my life in the ecological equivalent of Klondyke: a boomtown habitat.
This is kind of comforting: it means that if we mess upp the ecology really badly, once we stop it'll only take a few hundred years for a new system to establish itself. Provided that we ever stop. And that we don't poison everything with long-lived radioactive isotopes.
So, from a long-term ecological perspective, global warming isn't a problem. Life will go on. Some may argue, though, that for people with a life expectancy of fourscore years, many of whom live at near sea-level, such a perspective isn't particularly relevant.
[More blog entries about Ice Age, glaciation, ecology, environment, pollution, Scandinavia; istiden, miljö, föroreningar, ekologi.]