[hermit22]

Actually, there is one point - the idea that the ozone hole is shrinking.

Just last year, the ozone hole over the South Pole extended into the Southern tip of Chile. Shrinking, huh?

All that's happened is that the rate of expansion has shrunk. We assume this is because people are a little bit more environmentally conscious, but we (environmentalists) don't really know - causality and all that.

As for global warming - there is so much about weather and temperature cycles of the earth that we don't know that we can't say definitively whether or not we are causing the rise in temperature. But it's stupid to assume no responsibility, and to go on as if modern civilization has nothing to do with it - if only for the fact that we might be right.

I think, however, that Cairo's example of her son brings up a very important consideration - do we tell our children about the problems we've caused? If not, when do we let them know? And will it matter either way?