A woman visits the mirror installation “Mar de Espelhos” (Sea of Mirrors) ahead of its opening in Rio de Janeiro, Brazil on June 13, 2023. (Photo by Ricardo Moraes/Reuters)

Japan's Katsuyuki Tanamura reaches for a shot during a Japan men's water polo team training session at the Olympic Aquatics Centre, ahead of the 2024 Summer Olympics, Tuesday, July 23, 2024, in Saint-Denis, France. (Photo by Luca Bruno/AP Photo)

Ambience backstage and frontstagen at the Y Project fashion show during the Spring Summer 2024 Collections in Paris, France on October 1 30 2023. (Photo by Jonas Gustavsson for The Washington Post)

Beachgoers pass a snowman made from sand on Christmas Day at Bondi Beach in Sydney on December 25, 2023. (Photo by David Gray/AFP Photo)

The Chinese-flagged cargo ship Yu Zhou Qi Hang, which ran aground near Yehliu Geopark as a result of rough weather relating to typhoon Kong-rey, is seen in Yehliu on November 1, 2024. Taiwan on November 1 raced to remove 284 tonnes of oil from the Chinese carrier that ran aground off the island after losing power in rough seas as Typhoon Kong-rey neared. (Photo by I-Hwa Cheng/AFP Photo)

American singer-songwriter Grace VanderWaal at the PatBo show on September 15, 2025 in New York City. (Photo by Bre Johnson/BFA.com)

A refugee sits in front of a Greek riot police cordon during a protest at the Greek-Macedonian border, near the Greek village of Idomeni, March 1, 2016. (Photo by Alexandros Avramidis/Reuters)

The lightest material ever made has been produced by a team of scientists in China, a Chinese university announced.