” There is no competing theory that can explain the twentieth century warming.”
You’re insane. The piddling temp increase in the 20th century, most of which occurred by mid-century, could easily have been caused by, say, fluctuations in the sun’s output. Imagine that!
And don’t try to argue the “hockey stick” graph, which has been proven bogus. Let’s not forget the Middle Age warming period either, though your co-religionists have tried to quash it.
Climatologists don’t generally support AGW, and the older, more experienced climatologists overwhelmingly reject it. Of course most of them got their education before the Universities became such left wing anti-capitalist and Anti-American indoctrination centers.





