This is not true at all. The numbers that are pointed to as supporting warming are falsified and cherry picked. Many excellent articles have spelled out how 3/4 of the weather collection data points were omitted from the data used to show warming and that those left did not include most of Russia, any high altitude sights in Bolivia, and only 2 in California both in proximity to asphalt, just to name a few obvious problems. The data points that were included were massaged and manipulated by a model that has been shown to produce a warming trend no matter what numbers are plugged into it.
There is global warming and cooling in a natural cycle to which mankind has contributed in an insignificant fashion. Just examine the ice ages, mini ice ages and warming trends before man entered the industrial age. It has been cooling for the last 10 years, a fact that I mourn since my tender shrubs are languishing. Only someone with something to gain or someone that wants a way to control the rest of us so we live they way they think we should could continue to claim there is global warming.