A woman poses for pictures with skulls made of cardboard placed on an altar next to the San Francisco church in Mexico City during the celebration of All Souls Day on November 2, 2015. (Photo by Yuri Cortez/AFP Photo)

A supporter of “Si” vote cries after the nation voted “NO” in a referendum on a peace deal between the government and Revolutionary Armed Forces of Colombia (FARC) rebels, at Bolivar Square in Bogota, Colombia, October 2, 2016. (Photo by John Vizcaino/Reuters)

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)

Sisters Martha Syrett, 6, left, and Etta Syrett, 4, right, measure one of Ian Paton's huge pumpkins at Pinetops Nurseries, Lymington, Hants, UK on October 5, 2025. An enormous pumpkin grown by a pair of green-fingered twins has smashed two world records – it is the heaviest and the longest pumpkin on the planet. Ian and Stuart Paton grew the pumpkin which weighed in at 2,819.8 pounds (1,278.8 kg) – the equivalent of about two bulls. (Photo by Ollie Thompson/Solent News & Photo Agency)

A man carries a civet while taking part in an animal welfare campaign ahead of the World Animal Day celebrations on October 4, in Banda Aceh on October 2, 2022. (Photo by Chaideer Mahyuddin/AFP Photo)

Indian Air Force personnel parade during the 85th Air Force Day celebrations at Hindon Air Force base in Ghaziabad on October 8, 2017. (Photo by AFP Photo/Stringer)

This aerial picture taken on June 29, 2024 shows fishing boats moored at a beach in Danang, central Vietnam. (Photo by Dale De La Rey/AFP Photo)

“Hippo Chase”. As we approached the camp the Selinda Reserve of northern Botswana our boat passed by a hippo resting in the water. I turned around to look back at the boat's wake and saw the hippo charging after us! The hippo must've been tired from an all-nighter because he was angry. He rose way up out of the water three times trying to chase our boat! He was coming at us with such force that he created a wake of his own. Photo location: Selinda Reserve of northern Botswana. (Photo and caption by Curtis Simmons/National Geographic Photo Contest)