A stuntman performs in a car at the “Well of Death” at an exhibition in Srinagar, India, Friday, May 23, 2014. In the Well of Death, stunt drivers on motorbikes and cars drive in circles around the vertical walls of the well-shaped construction. (Photo by Dar Yasin/AP Photo)

Children walk past the partially collapsed boundary wall of a school and a Buddhist shrine that were damaged during the earthquake earlier this year at Khumjung, a typical Sherpa village in Solukhumbu district also known as the Everest region, in this picture taken November 30, 2015. (Photo by Navesh Chitrakar/Reuters)

Women spray their designs on a wall during a graffiti class offered by the LATA 65 organization in Lisbon, Portugal May 14, 2015. The LATA 65 organization is an initiative for the elderly in the area of urban art. Since it began in 2012, they have introduced the world of graffiti to over 100 senior citizens, giving workshops in different neighborhoods of Lisbon. (Photo by Rafael Marchante/Reuters)

Actor Jackie Chan poses with student performers after participating in a leg of the Beijing 2022 Winter Olympics Torch Relay at the Badaling Great Wall on February 3, 2022 outside Beijing, China. (Photo by Kevin Frayer/Getty Images)

A painted figure is seen on a wall of the home of the mother of Robert E. Crimo III, the 21-year-old suspect facing seven counts of first-degree murder in an attack on a Fourth of July parade, in Highland Park, Illinois, U.S. July 6, 2022. (Photo by Cheney Orr/Reuters)

A combination of high tide and strong winds in the coastal city of Saint-Malo, France, resulted in waves as high as apartment blocks on Friday, March 24, 2023. Waves 50 foot (15,24 m) high flooded the streets as they breached sea walls. (Photo by Mathieu Rivrin/Solent News & Photo Agency)

Competitors bounce off the wall following their Men's 60m Heat on day one of the World Athletics Indoor Championships Nanjing 2025 at Nanjing Youth Olympic Games Sports Park on March 21, 2025 in Nanjing, China. (Photo by Cameron Spencer/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)