I don’t know where Mr. Powell gets his facts and statistics, but it’s certainly not from the NASA Langley Research Center he says he is quoting from. In fact, if you go to https://climate.nasa.gov/evidence you will see that NASA is very clear that climate change is real, the planet is warming, and that, with 95 percent certainty, warming is caused by man-made CO2.
Likely his info came not directly from NASA ,but from an “alternative news” website that distorts and lies about NASA statements. It can be hard to believe that organizations will flat out lie to you. But when in doubt, go to the source.