About VZ: No time to watch that video, but she has been proposing solar explanations for the observed temperature changes, so I assume that's the topic. There

About VZ: No time to watch that video, but she has been proposing solar explanations for the observed temperature changes, so I assume that's the topic. There are a lot of reasons to reject changes in solar forcing as an explanation for recent warming (as opposed to Milankovitch cycles) - and it has been rejected, although 15 years ago it was still treated seriously. Also, the CO2 rise is very real, and the link of CO2 to warming is clear. It's easy to watch/read "point explanations" for climate phenomena, and get confused. ("I read this paper from 2015 in Nature and ...".) One reason is that laypeople, even those with physics backgrounds, just don't have enough background information to put claims in context. Earth science is hard - so many interacting systems. A better source for motivated laypeople is the NCA - the National Climate Assessment - see https://nca2018.globalchange.gov https://nca2018.globalchange.gov . It's done every 5 years, and the next one is due in 2023.