Best-selling author and scientist Gregg Braden warns us of drastically reducing atmospheric CO₂

Best-selling author and scientist Gregg Braden warns that efforts to drastically reduce atmospheric CO₂ could bring us dangerously close to the extinction threshold, endangering all life on Earth:

"If we were to meet the [the UN's climate] goals... we would see a CO₂ level right around 220 or so parts per million."

"Extinction level CO₂ on this planet—when the CO2 drops below a certain level, forests die and life does no longer thrive—that is 180 parts per million."

"Here's the bottom line: It's not good for us. Those proposals are not good for humans."