If a historian were charting the climate movement, she’d probably set its high-water mark so far as September of 2019, when something like 7 million people, most of them young, took to the streets of thousands of cities around the world. To read the accounts that flooded in from around the world is poignant and in some cases heartbreaking (Dom Phillips was providing the updates for the Guardian from Brazil, where Indigenous groups were rallying; this week a suspect admitted to killing Phillips while he was reporting in the Amazon).