5. Could natural factors be the cause of the warming? Nope.
Nope? NOPE?
With such a monstrous caveat as "could," and merely considering the sun, cloud cover and seasons, this nitwit author replies with NOPE? What a maroon.
Yeah, that was a good one. Nope. No natural factors caused the mile-high ice sheets covering the northern hemisphere to melt about 30,000 years ago. It was right about the time man discovered how to use fire. Yep, that's what did it. Cave fires melted the ice sheets. I have a computer model that proves it.