Aggh, I can't believe there are so many ignorant morons out there! I can't believe how many people on here say stuff like the climate is always changing and always has, so what's the problem. Of course it is always changing! Obviously it was massively different when the dinosaurs were around. But the rate of change is completely unprecedented; there's overwhelming evidence in the ice core as other places that climate change has never happened at anything approaching the current rate. And as for thinking that it's vain to assume we can influence the environment enough to alter the weather ... I'm sorry, what? What are you talking about? The impact of man on the environment is overwhelming; there isn't a place on earth unaffected. We know what the effect of greenhouse gases in the atmosphere is and we know how we are affecting it. The specific impact this will have on the weather is very hard to predict, but the fact that this will change everything dramatically is not.
As for someone who said that lots of scientists now believe the world is getting cooler and staying the same. Um ... references, please? Because this is total bullshit. Please see elegant pie chart linked to above. 98% of scientists believe the world is getting hotter at an unprecedented rate due to human activity.
And the whole 'it's not the earth that needs to be saved, it's us' argument. Well, obviously! I don't think anyone is claiming the planet itself is going to fall apart. Saving the world refers to the things that live in the world - not just humans but every other kind of animal and plant. Some will survive major climate change but an awful, awful lot will be screwed.
Honestly, it's so depressing. The evidence is out there, easy to understand and overwhelmingly convincing. It's the fact that this amount of wilful ignorance still exists that ensures we are all totally fucked. Sobs quietly to self.