CO2 Behind Prehistoric Global Cooling!

 " In a paper in the journal Science, Huber and a team of climate researchers have reported finding evidence of widespread cooling, and additional computer modeling of the cooling suggests that it was caused by a reduction of greenhouse gases in the atmosphere." (Science a GoGo)
Can anyone lend these guys an accurate thermometer? Yeah, when you add CO2 it kinda warms it up...and when you take it away, it sort of cools it down. How much do we the tax payer pay for these climate folks to muse in coffee bars around the world before announcing to us without thermometers the bleedin' obvious? Perhaps they can save everyone a stack of the folding stuff by just asking their respective grannies what the weather's doin'.