A pedestrian walks on a bridge above vehicle traffic in New Delhi, India, Tuesday, Nov. 12, 2019, as the city is enveloped under thick smog. The air quality index exceeded 400, about eight times the recommended maximum. A study released on Tuesday, May 17, 2022, blames pollution of all types for 9 million deaths a year globally, with the death toll attributed to dirty air from cars, trucks and industry rising 55% since 2000. (AP Photo/Manish Swarup, File)