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 boy dressed as Hindu Lord Shiva poses before performing in a religious procession at the Mahashivratri festival in Allahabad, India, March 7, 2016. Hindus across the country celebrate Mahashivratri, better known as Lord Shiva's wedding anniversary. (Photo by Jitendra Prakash/Reuters)

Since her stint in the 2019 Love Island villa, where she made the nation laugh, Irish television personality Maura Higgins has been working as a brand ambassador for Ann Summers. And the 31-year-old has really set pulses racing in her latest edit with the saucy lingerie brand. Available online and in stores from today, December 1, 2021, Maura has looks absolutely stunning in the new Ann Summers Christmas campaign which includes bodysuits and basques, two-piece sets, bras, and thongs in festive hues for the Christmas season. (Photo by Ann Summers/The Mega Agency)

Timbuktu: A UN peacekeeper from Burkina Faso stands guard at the Djinguereber mosque, built in the 14th century, during a visit by a UN delegation on election day in Timbuktu, Mali, July 28, 2013. (Photo by Joe Penney/Reuters)

A man poses in front of a portrait of late Chinese Chairman Mao Zedong during the opening of an exhibition of Mao related art in Beijing, China, September 8, 2016. (Photo by Thomas Peter/Reuters)

Visitors wear masks as they catch some shade under the Oscar Mayer Wienermobile amid 50 acres of Ranunculus flowers at “The Flower Fields” in Carlsbad, California, U.S., March 31, 2021. (Photo by Mike Blake/Reuters)

A Russian soldier takes part in drills at the Kadamovskiy firing range in the Rostov region in southern Russia, Wednesday, December 22, 2021. Russian Foreign Minister Sergey Lavrov says that Russian and U.S. negotiators will sit down for talks early next year to discuss Moscow's demand for Western guarantees precluding NATO's expansion to Ukraine. (Photo by AP Photo/Stringer)

Anti abortion pregnant women attend a protest outside the U.S. Supreme Court as justices hear oral arguments in a bid by President Joe Biden's administration to preserve broad access to the abortion pill, in Washington, U.S., March 26, 2024. (Photo by Evelyn Hockstein/Reuters)