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)

Horrified animal welfare groups fear baby sharks kept as a bizarre attraction in a brothel have been eaten – by the landlord. Shocking videos show the the fish crammed into an aquarium illuminated with red lights hanging above s*x works at a seedy “gentlemen's club” in, Bangkok Thailand. Five exotic black tip sharks – which can grow up to 8.5ft – float in the filthy water while holidaymakers take their pick of women in skimpy dresses. The deadly fish were just one form on entertainment employed by the establishment in the Thai capital Bangkok. (Photo by SWNS.com)

A fan dressed as “Loki” poses before the European premiere of “Avengers: Age of Ultron” at Westfield shopping centre in Shepherds Bush, London April 21, 2015. (Photo by Stefan Wermuth/Reuters)

Actress Laetitia Casta attends the “The Meyerowitz Stories” screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 21, 2017 in Cannes, France. (Photo by Stephane Mahe/Reuters)

Boys play with a drainage culvert used for flood control in Las Pinas, Metro Manila February 28, 2016. (Photo by Erik De Castro/Reuters)

In this photograph taken on June 28, 2015, a hiker in Hong Kong takes a picture of the city from a walking trail. The southern Chinese territory is crisscrossed by more than 180 miles of designated hiking trails. (Photo by Alex Ogle/AFP Photo)

A classic American car is wrapped in plastic to prevent sea salt from corroding it in Havana, Cuba, Tuesday, March 2, 2021. Vintage cars in Cuba are part of daily life with most classic cars being used as taxis and to transport tourists. (Photo by Ramon Espinosa/AP Photo)

A model wears a creation for the Louis Vuitton Pre-Fall 2023 show in Seoul, South Korea, Saturday, April 29, 2023. (Photo by Lee Jin-man/AP Photo)