From 80,000 to 12,000 years ago, when CO2 concentrations lingered near or below 200 ppm, many new or recent studies suggest that when directly comparing region to region, it was as much as 6°C warmer than today even during this ice age period. This has prompted some scientists to “exclude atmospheric pCO2 as a direct driver of SST [sea surface temperature] variations”.
Michael Mann on COVID: "I see a perfect storm of climate opportunity. Terrible as the pandemic has been, this tragedy can also provide lessons, particularly on the importance of listening to the word of science when facing risks. That could be from medical scientists advising us on the need for social distancing to reduce the chances of contagion, or it could be from climate scientists recommending we cut carbon emissions to reduce the risk of climate catastrophe. There is also awareness of the deadliness of anti-science, which can be measured in hundreds of thousands of lives in the US that were unnecessarily lost because a president refused to implement policies based on what health scientists were saying. Out of this crisis can come a collective reconsideration of our priorities. How to live sustainably on a finite planet with finite space, food and water. A year from now, memories and impacts of coronavirus will still feel painful, but the crisis itself will be in the rear-view mirror thanks to vaccines. What will loom larger will be the greater crisis we face – the climate crisis.?
Mann on Gates: "I disagree with him quite sharply on the prescription. His view is overly technocratic and premised on an underestimate of the role that renewable energy can play in decarbonising our civilisation...Gates writes that he doesn’t know the political solution to climate change. But the politics are the problem buddy. If you don’t have a prescription of how to solve that, then you don’t have a solution and perhaps your solution might be taking us down the wrong path."
Mann on Greta: "I am very supportive of Greta. At one point in the book, I point out that even she has at times been a victim of some of this bad framing.