Fireworks light up over Victoria Harbour to celebrate the 75th anniversary of China's National Day, in Hong Kong, China on October 1, 2024. (Photo by Lam Yik/Reuters)

Pride rally 2017 on fifth avenue in Manhattan, New York, June 25, 2017. Thouands cheered as members of LGBT community danced and marched under a bright summer sun. Many participants carried political themed signs as President Trump's adminstration has angered some in the LGBT community. (Photo by R. Umar Abbasi)

A window cleaner passes a lighter to his colleague while rappelling from a new building in Tianjin March 23, 2007. (Photo by Reuters/Stringer)

Ariel Winter is seen on February 21, 2017 in Los Angeles, CA. (Photo by Hollywood To You/Star Max/GC Images)

American rapper Amala Ratna Zandile Dlamini, known professionally as Doja Cat attends the 64th Annual GRAMMY Awards at MGM Grand Garden Arena on April 03, 2022 in Las Vegas, Nevada. (Photo by Maria Alejandra Cardona/Reuters)

Indian police detain a Tibetan activist during a protest held to mark the 57th anniversary of the Tibetan uprising against Chinese rule, outside the Chinese embassy in New Delhi, India, March 10, 2016. (Photo by Cathal McNaughton/Reuters)

Impala pictured in the Kruger National Park on December 7, 2007 in Mpumalanga, South Africa. (Photo by Warren Little/Getty Images)

Soap Bubble Structures by Kym Cox. Bubbles optimise space and minimise their surface area for a given volume of air. This phenomenon makes them a useful tool in many areas of research, in particular, materials science and “packing” – how things fit together. Bubble walls drain under gravity, thin at the top, thick at the bottom, which interferes with travelling lightwaves to create bands of colour. Black spots show the wall is too thin for interference colours, indicating the bubble is about to burst. (Photo by Kym Cox/2019 Science Photographer of the Year/RPS)