An Indian worker demonstrates an anti-smog gun to control dust at the Integrated Exhibition cum Convention Center (IECC) construction site in New Delhi, India, Friday, Oct. 9, 2020. Authorities in New Delhi launched an anti-pollution campaign on Monday in an attempt to curb air pollution levels ahead of winter, when the capital is regularly covered in toxic haze, and warned that filthy air could make the coronavirus pandemic more dangerous. (AP Photo/Altaf Qadri)