I hate politically divided statements and certainly they have no place on HN.

What I can say, though, is that "those who say global warming news is exaggerated" are very confident in their knowledge, while the most informed scientists I've known or read are all of the same mind: we don't know.

After the Arctic sea ice collapse in the Q4 report of the IPCC, where we have found half the sea ice was gone in about a third of the time as the most aggressive estimate (the coverage has come back in 2008 but is the thin product of one season), I think most of the knowledgeable arguing on extreme climate change stopped. But outside of that, we simply don't know much.