The IPCC, source of pretty much every bit of data that suggests the earth is warming up because of man seems to have been busted lying again
Governments make policy based on what this bunch of self serving knobs produce.
Every single temperature rise this bunch of cowboys has predicted has not happened with them being over 300% out at times.
Yet people still believe them.
They have a history of falsifying data to support man made global warming.
I'm not getting involved in a discussion on this, since they always end up circular. Look into the IPCC's history and make your own minds up.