A chap called Christopher Monckton has had a careful look at the graphs & conclusions used in global warming publicity, and found a few holes.
For example, a big chunk of the medieval period was three degrees warmer than now, but the data showing this was cropped from the graphs. Graphs of ice-ages versus CO2 levels were — contra to normal practice — not superimposed, for the very simple reason that the CO2 level changes followed ice-age changes rather than prompting them.
There was little ice at the North Pole: a Chinese naval squadron sailed right round the Arctic in 1421 and found none.
The entire 20th-century warming from all sources was below 2 watts. The [warmer] sun could have caused just about all of it.
It makes for an interesting read. It doesn’t necessarily mean that we’re avoiding global warming, just that it’s been broadly mis-reported for what appear to be political reasons.
Knowing about those reasons should allow us to make more rational, effective decisions about how to react.