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 child runs towards Mohamed Maarouf, 28, as he walks with a sack of gifts while dressed in Saint Nicholas (Santa Claus) costume in a slum near the centre of Iraq's southern city of Basra on December 24, 2021. (Photo by Hussein Faleh/AFP Photo)

Drag Race UK alumni, Cheddar Gorgeous in the window of a Primark store in Manchester to celebrate the opening of the Photo by Fujifilm x Primark concession in Manchester on Wednesday, November 1, 2023. Fans are invited to visit the instore concession on the first floor in Primark on Market Street where Cheddar Gorgeous will be in a garment made up of over 1,000 Fujifilm INSTAX prints and designed by local fashion creator and artist, Mariusz Malon. (Photo by James Speakman/PA Wire)

The Northern lights made an appearance just after midnight on Wednesday over Sycamore Gap in Northumberland, North East England on September 13, 2023, with the aurora pillars visible. (Photo by Ian Sproat/Picture Exclusive)

Students salute after a man cast his vote at a polling station during the new Family Code referendum in Havana on September 25, 2022. Cubans on Sunday are voting in a landmark referendum on whether to legalize same-s*x marriage and adoption, allow surrogate pregnancies, and give greater rights to non-biological parents. (Photo by Adalberto Roque/AFP Photo)

Coco Gauff's hand during her second round Australian Open match against Emma Raducanu at Melbourne Park, Melbourne, Australia on January 18, 2023. (Photo by Hannah Mckay/Reuters)

Scottish actress Karen Gillan (L) and guests attend the Guardians of the Galaxy Vol. 3 World Premiere at the Dolby Theatre in Hollywood, California on April 27, 2023. (Photo by Rich Polk/Getty Images for Disney)

English actress Danielle Harold shot exclusively for the Sun on Sunday, May 7, 2023 in London, United Kingdom. (Photo by Olivia West/News Group Newspapers Ltd via The Sun)