Climatology
FILE - Workers gesture near the Zhangjiakou National Ski Jumping Center under construction for the Beijing 2022 Winter Olympics in Zhangjiakou in northwestern China's Hebei province on on Dec. 16, 2020. (AP Photo/Ng Han Guan, File)
EXPLAINER: Olympics show complexity of sustainability claims

By Candice Choi And Kelvin Chan Feb. 10, 2022 10:35 PM EST