[mburbank]

Depends on what you mean by screwed.

I think things will change a LOT, but will the big changes be my generation, my kids? The models I look at suggest that even if we got very serious on a global scale about reducing greenhouse gasses right now, (and I hardly see that happening) we are looking at some pretty significant climate rearaanging in the next couple hundred years. On a human scale it will be very dramatic, and humans tend to get very violent when things change. No have spies likes getting their hive shoved around.

The planet, however, is very resiliant. Earths original brand of oragnic life altered earths climate before, killing themselves off and creating mass extinctions. Given a several million years, earth bounced back.

Humans are similarly resourceful. I don't not think the climate change we've set in motion will do anything like reducing us to the very small gene pool the last major ice age did, and as a species we made a complete recovery from that.