For decades, climate activists have exhorted people in the wealthy West to change their personal behavior to cut carbon emissions. We have been told to drive less, to stop flying and, in general, to reduce consumption—all in the name of saving the planet from ever higher temperatures.
The Covid-19 pandemic has now achieved these goals, at least temporarily. With the enormous reduction in global economic activity, it has been as if people around the world suddenly decided to heed the activists and curtail their travel and consumption.