>A group of 500 prominent scientists and professionals, led by the CLINTEL co-founder Guus Berkhout

Well let's see who this is.

https://en.wikipedia.org/wiki/Guus_Berkhout

> Augustinus Johannes "Guus" Berkhout (born 1940) is a Dutch engineer who has worked for the oil and gas industry, and as a professor. Berkhout started his career working for Shell.

> In 2019, Berkhout founded the climate change denial organization Climate Intelligence Foundation (CLINTEL).