The world is heating up , and a new study warns that almost one-third of people could face the double-whammy of a heatwave and drought five times more often by the 2090s. Researchers in Germany and China looked at compound hot-dry extremes, events where severe drought and intense heatwaves happen at the same time, in the same place. Based on the team's modeling and our current emissions trajectory, 28 percent of the global population – nearly 2.6 billion people – will experience at least five