How will hydropower bolster a renewable energy world?

In the last few years, U.S. summers have looked a little apocalyptic. Wildfires raged across the West Coast. Floods stole homes. In July 2021, the Earth’s hottest month ever was recorded, and power grids flickered, causing widespread blackouts that shut off air conditioning, air purifiers, and oxygen machines. Such power failures pose a new, potentially deadly risk to people across the warming world.