Ha, first time ever I hear Sanders saying something reasonable - and Rockstar beats me to it. Maybe you were as surprised as I was...?!
https://www.bbc.com/news/world-us-canada-49601678
As I use to say since years: We. Are. Too. Many.
Right now around 6 to 7 billions too many, I estimate. And its not just about climate, it goes far beyond that. Natural sustainability on all levels, in all regards.