Acid rain will kill all the forests... -> Yes, until people realised this and started fitting FGD to heavily sulphur-emitting plant. So it didn't come to pass because *something was done about it* TRIPE - it turns out that forest death never actually affected more than 0.5% at most of the overall European Forest are (source: Gundersen et al 1998) NAPAP tested growth of trees in acid and found no acid rain effect on trees at all (part of half a billion dollars of research). So, your facts are incorrect.
GM crops will kill you... -> Not yet... Of course if something goes wrong it'll be really easy to stop the seeds spreading all over the place and contaminating normal farmland. Of course, not so much in Europe.. TRIPE. They have not killed anyone. Show me something that says they have. Also, they will not "contaminate farmland". Weeds will always out evolve something introduced, whether selectively bred or GM, so try readin up a little elementary biology. So, your facts are incorrect.
The hole in the ozone layer's will kill you... -> It certainly doesn't do you any good. Again, the agreement to ban CFCs dealt with that one, so, er, because *something was done about it* TRUE. And how bad was the problem? The increase in UV at its peak was about the same as moving from Manchester to London (Source: Chakrovarty et al, 1997). Hardly "killing", is it? But you would never have got that info from Greenpeace of FoE, would you?
You've done what the green apologists always do; you've taken my statements (will kill you/forests) which we were told at the time and come up with some different points at least two of which are based upon factual inaccuracies. Keep on bleating about the planet dying. Instead of ever saying "things may get a little worse or better", your kind of mentality is the one that always predicts catastrophe.
And then, when your type predicts catastrophe from Global warming, you wonder why you're ignored. (e.g. Al Gore, sea levels up by 20 ft. IPCC, sea levels up by max 2 ft). Has it occurred to you that things might just change a little rather than always being the END OF THE WORLD? Ever heard of the boy who cried "wolf"?