For mathematical proof that man-made global warming is
crap, go here -
http://front.math.ucdavis.edu/author/R.Tscheuschner
Download Article 1 "Falsification Of The Atmospheric CO2
Greenhouse Effects Within The Frame Of Physics".
If the math is too heavey for some, read the summarys
which are written after the proofs. The summarys are on
the money with the math.