If the anthropogenic global warming theory is wrong, why is the upper atmosphere cooling?

The short answer has to do with the science of heat physics. No matter how much of the sun's energy falls on the earth, the same amount has to be radiated away or heat will build up. That's why people sweat and that's why there's a radiator on your car. If you build up a significant greenhouse barrier the amount of heat escaping into out space decreases. Of course you want some heat to be retained or at night the earth surface would plunge into the below zero area...not good. On the flip side you want a good deal of the heat radiated away or you'll burn up...also not good. Currently not as much heat is getting through the CO2, methane and water vapor that's built up in our paper thin atmosphere because of burning fossil fuels so the stratosphere up there above the cirrus clouds is cooling off...probably not good. The deniers of course have probably never parked their car in the sun with the windows rolled up...a fairly good og for the greenhouse effect. It gets really hot in a car parked in the sun with the windows rolled up. Set 'yer tushy down on that black upholstery and the concept of 'global warming' will give you a darn good object lesson. Some deniers say the sun is getting 'hotter'...so what? The heat has to be radiated away regardless of how much incoming energy has to be dealt with. Others say it's volcanoes....that's a crock. Volcanoes put out carbon 12 and carbon 13. Burning fossil fuels produce carbon 14, a radioactive element that all living things absorb. When these living things decay or get burned, like coal and oil, the carbon 14 is released...that's how we know what percent of the atmosphere comes from burning stuff...and it's a lot and it's not a good thing. I could go on, but the deniers will just come back with some bull #$%^ about Al Gore or what some right wing radio dummy said. "Ya gotta' love these guys!