It does have the design of a web page trying to sell me Viagra... in 1999. However, the few people they quoted looked like their credentials were reasonably leg

It does have the design of a web page trying to sell me Viagra... in 1999. However, the few people they quoted looked like their credentials were reasonably legit ("award-winning" is meaningless. However, many had degrees in the right fields, and had worked for legitimate organizations). I don't know what the credentials of the whole 400 looks like, though. It is interesting that when supporters of climate change alarm have petitions like this, it is considered a faux pas to question its validity. You are accused of being anti-science if you do. I suppose that is what the "politicization of science" means in practice. The point is to challenge the idea that the "science is settled", and that you are a quack/heretic/flat-earther if you disagree.