Emissions reductions targets

I'd be interested in something like this:

"Will NZ sign up to a binding emissions reduction target in the range of 25-40% by 2020 at Copenhagen in 2009" as Greenpeace advocates.

That's a good idea, let me look into this some more. I really want to get some emissions trading stuff onto the site because it will affect many people and there's not a lot out there (casual observation) on the sort of costs these new systems may add.