AVAAZ.org (cofounded by the folks at MoveOn.org) is putting together a petition to get the world leaders attending a summit this June to focus on climate change.
http://www.avaaz.org/en/climate_action/
These articles by Elizabeth Kolbert which appeared in The New Yorker should be enough to convince anyone that this is important.
The Climate of Man - I
The Climate of Man - II
The Climate of Man - III
