So there you have it, the WSJ spelled it out in more detail here. The WSJ refers to is as the "availability cascade", commonly known as the rumor mill. You can test the hypothesis by asking the next person you meet who is saying we are all going to die "How do you know this"? End your conversation with "I wonder why they never talk about the sun when discussing global warming".
What's further maddening, the proof is out there. Recently a satellite study was concluded and it found no unique signature for CO2 induced global warming. The paper is here, read the abbreviated short version. David Evans, a former supporter of the nonsense before he concluded this study, had set out to prove the unique CO2 signature was present. As with many things, he was wrong so he flipped sides.
Just found this paper today while searching for a response to your posting. I'll have to keep it in my files.
Climate Change and Tropospheric Temperature Trends
Sorry, it doesn't have an "abbreviated short version" (ASV). For a complex subject like this, ASVs gloss over a lot of important scientific information. Evans' piece is a fine example.