what do you mean by 'counter'?
are you looking for something sciency that prooves CO2/methane aren't greenhouse gases?
or something that approaches the subject with a level head, avoiding any doomsday indulgence (we all like a good disaster movie)?
'X is happening, Y will happen, we'll end up doing Z about it, life will carry on'
if you're looking for the latter, i can recommend 'the meaning of the 21st century' by James Martin.
in summary: 'we're facing a few problems that we really need to sort out, we've already made a good start so there's no need to lose any sleep over it. but it's important to keep doing a bit more, come back in 100 years and everything should be peachy'
(luckily, CO2 and methane are greenhouse gases, we wouldn't be here if they weren't, but they're so good at absorbing infrared that even only small amounts have a big effect, there isn't much to argue about, but i'm sure someone will try…)