Sign up for The Weekly Planet, Robinson Meyer’s newsletter about living through climate change, here. For the past few days, a heat wave of mind-boggling scale and intensity has gripped South Asia. More than 1 billion people in India and Pakistan have endured daytime highs of 40 degrees Celsius, or 104 degrees Fahrenheit. Delhi, the world’s second-largest city, has suffered through back-to-back days of 110-degree Fahrenheit heat. And Nawabshah, Pakistan—a city of nearly 230,000 people in the country’s desert south—came […]