Environmentally sustainable development was the leading theme at the World Economic Forum in Davos in late January 2020. Just two months later, places including Wuhan in China, California’s Bay Area, and New York City experienced unusually blue skies and clean air as a consequence of the COVID-19 pandemic. What has happened is unprecedented and has replaced, for now, the long-term climate change agenda with a short-term public health pandemic agenda as the foremost global urgency. H ...