How to Make Snow for a Winter Olympics in a Dry City

Wang Feiteng has spent much of his career keeping an eye on China’s glaciers, making arduous treks into the mountains every year to study how to slow their decline in a warming world. More recently, however, his work has involved a different kind of ice formation. Wang and his team are in charge of the artificial snow needed for the 2022 Beijing Winter Olympics, set to start on Feb. 4.Beijing and