Tourists view Hukou Waterfall on the Yellow River in the frigid winter on December 28, 2023 in Yan'an, Shaanxi Province of China. Freezing winter air has turned Hukou Waterfall into an icy wonderland. (Photo by VCG/VCG via Getty Images)

The photo taken on September 17, 2024 shows a villager walking over burning charcoal to perform a traditional fire-walking ritual called “Lianhuo” at Shuangfeng village in Jinhua, in eastern China's Zhejiang province. (Photo by AFP Photo/China Stringer Network)

Performers from “New Baby Junior Dance Crew” take part in a parade on the first day of the Lunar New Year of the Snake, in Hong Kong on January 29, 2025. (Photo by Lam Yik/Reuters)

Models wait backstage before the opening show for China Fashion Week, featuring Finnish outdoor gear brand Halti, in Beijing, Thursday, March 20, 2025. (Photo by Ng Han Guan/AP Photo)

Maya Jama reaches for the skies in a rainbow swimming costume. Presenter Maya posed in the sun during a getaway trip to Ibiza on August 19, 2025. (Photo by Instagram)

Young Korean women wearing hanbok (Korean traditional dress) walk inside Gyeongbok Palace on March 27, 2016 in Seoul, South Korea. There has been a trend in recent years for the young Koreans to wear the traditional Korean dress, Hanbok. Wearing the traditional dress, they will walk around downtown Seoul on weekends taking selfies, and share their memories with friends on social media, and also to promote their traditional dress to foreign visitors. (Photo by Jean Chung/Getty Images)

A Palestinian protester sets fire to himself as he throws a molotov cocktail during clashes with the members of the Israeli armed forces in the West Bank city of Hebron, 13 October 2015. The past 12 days have seen the worst spell of street violence in Israel and the Palestinian areas in years, stirred in part by Muslim anger over perceived changes to the status quo observed at a disputed Jerusalem holy site. Sixteen Palestinians from the West Bank and Jerusalem have been killed, but more than half of them have been attackers shot dead after or during attempts to stab Israelis. (Photo by Abed Al Hashlamoun/EPA)

Macro or Micro? Scientists’ pictures baffle our sense of scale. It began when Stephen Young, a geography professor at Salem State University in Massachusetts, tricked his biologist colleague Paul Kelly into thinking a satellite image was one of his electron microscope scans. Can you guess whether they are close-up or very far away? (Photo by Paul Kelly)