Well, probably not a lot, since these 11,000+ "scientists" signed onto a fake science editorial. It was essentially a press release letter-to-the-editor type of article that could have been written by any climate doomsday acolyte, such as Al Gore or Greta Thurnberg.
The MSM presented the press release as a "study" but there was no peer-reviewed science or empirical evidence presented in the journal.
And the signatories of this letter simply went to a web site and seemingly just had to click a button to register their approval of the letter. No vetting of the signatories whatsoever.
Rebel News TV has a great video describing the non-scientific article and the Canadian mainstream media reaction to it. During the analysis, the Rebel TV commentator starts a 13-minute review of some of the 400 Canadian scientists who put their signature on the dotted line for all to see.
Do ya think these Canadian "scientists" possess a portfolio of sophisticated research and expertise in climate science? Watch and see for yourself.
Kinda cool that an occupational-therapist can "sign" a press release and immediately become a scientist.
Fake news and science in one jumbo package that the mainstream press heartily swallowed and gleefully regurgitated.
Full video on YouTube.