To visualize the hellishness of the climate crisis in 2021, look no further than General Sherman, the world’s largest tree, wrapped in fire-resistant foil to protect the legendary giant sequoia from flames burning a path of destruction through the Sierra Nevada.

California’s so-called Ancient Ones evolved with fire. It’s crucial to their reproductive cycle. But they aren’t prepared for blazes like those of the last year, which are burning hotter and more intensely as Earth warms, mostly because of the combustion of fossil fuels. Last year, flames killed roughly 10% of the world’s giant sequoias.