"Science vs. Gore on Methane"

Here.

An excerpt:

...the cessation of the historical increase in the atmosphere's methane concentration - which appears to have actually been accomplished, and without any overt help from mankind - will likely do more to slow the increase in total greenhouse-gas radiative forcing than any program humanity will ever be able to implement. And if the atmosphere's methane concentration actually starts to decline (which looks to be a real possibility in the very near future), the increase in radiative forcing due to continued increases in the air's CO2 content will be significantly countered by the decline in methane-induced radiative forcing, once again accomplishing more than anything man will ever be able to do in this regard.