Dancers at the Windmill Theatre in London, England practice a routine wearing gas masks and hard-hats with their costumes, 1940. (Photo by Hulton Archive/Getty Images)

A Ukrainian police officer takes cover in front of a burning building that was hit in a Russian airstrike in Avdiivka, Ukraine, Friday, March 17, 2023. (Photo by Evgeniy Maloletka/AP Photo)

A lovely sunrise in at the beachfront of Playa de Muro, Alcudia on the island of Mallorca, Majorca, Spain on May 16, 2022. As a road cyclist walks his road bike along a wooden jetty heading out into the calm waters. (Photo by Phil Wilkinson/Alamy Live News)

Ukrainian servicemen of the 128th separate mountain assault Transcarpathian brigade of the Armed Forces of Ukraine take part in tank drills, amid Russia's attack on Ukraine, in Zaporizhzhia region, Ukraine on January 11, 2024. (Photo by Reuters/Stringer)

People hold an umbrella under strong wind on the promenade of Victoria Habour as tropical cyclone Ma-on approaches Hong Kong, Wednesday, August 24, 2022.Tropical Storm Ma-on was gaining strength as it headed for Hong Kong and other parts of southeastern China on Wednesday after displacing thousands in the Philippines. (Photo by Anthony Kwan/AP Photo)

Andrea Petkovic of Germany in action against Sara Errani of Italy during day one of the Mutua Madrid Open tennis tournament at the Caja Magica on May 3, 2014 in Madrid, Spain. (Photo by Julian Finney/Getty Images)

Wedges of an orange generate enough current and electrical juice – 3.5 volts – to power an LED. The fruit’s citric acid helps electrons flow from galvanized nails to copper wire in this 14-hour exposure. This image was published in September’s Visions of Earth, a trio of photos that appear in each issue of National Geographic. (Photo by Caleb Charland/National Geographic)

A driver on the Horseshoe Pass in North Wales wiping the snow from the windscreen of his car during a heavy snow storm, 18th January 1937. (Photo by Norman Smith)