Earth science
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

FILE - North Dakota defenseman Jake Sanderson plays against Penn State during an NCAA college hockey game on Saturday, Oct. 30, 2021, in Nashville, Tenn. USA Hockey and Hockey Canada are eyeing several college players to play at the Olympics after the NHL decided not to participate in Beijing. North Dakota’s Jake Sanderson has already agreed to play for the U.S. (AP Photo/John Amis, File)
US starts Olympic preparation in Beijing without 3 players

By Stephen Whyno Feb. 04, 2022 04:35 AM EST

France's Jeremy Flores rides a wave during a training session at the 2020 Summer Olympics, Friday, July 23, 2021, at Tsurigasaki beach in Ichinomiya, Japan. (AP Photo/Francisco Seco)
Surfing science: Dependent on weather, defined by the ocean

By Sally Ho Jul. 24, 2021 05:31 AM EDT