Just look at the data, it speak for itself.
There's so many free available data sets on the internet.
If global warming truly existed, then there simply would not be some areas of the earth that are not rising in temperature. Everywhere would be rising in temperature, regardless. The science behind man-made global warming states that CO2 traps heat energy as it is being reflected off of the earth. I
To keep it simple.
If you fart in your living room does it smell in the kitchen?