This picture taken on March 1, 2016 shows a man running a mobile pig mating service and waiting outside a customer's home with his male pig in a cage pulled behind his motorcycle in the northern province of Bac Ninh. (Photo by Hoang Dinh Nam/AFP Photo)

A reveler takes part in the annual Pride Parade in Caracas on July 7, 2024. (Photo by Federico Parra/AFP Photo)

Wearing a mariachi hat, candidate Clara Brugada, who is running as a delegation leader under the ruling party Morena, smiles as she greets supporters on the last day of campaigning ahead of the June 6 mid-term elections, in the Iztapalapa borough of Mexico City, Wednesday, June 2, 2021. (Photo by Marco Ugarte/AP Photo)

The East and West piers at Whitby in United Kingdom were not built for pleasure like many others but to provide shelter for ships from the storms and currents of the North Sea. Picture date: Thursday, March 23, 2023. (Photo by Andrew McCaren/London News Pictures)

Yan Zhengming (R), 94, and his wife Zhou Suqing (C), 90, attend their wedding ceremony at their home, on the 70th anniversary of their marriage, in Quxian county of Dazhou, Sichuan province, China, May 15, 2015. The wedding, organized by local charity groups, was a long-time wish of veteran of the World War Two Yan, who married Zhou 70 years ago, but could not afford to have a wedding ceremony, local media reported. (Photo by Reuters/Stringer)

A woman in costume stands on the street during pre-Halloween weekend party in Shanghai, China on October 28, 2023. During the last weekend before Halloween, which comes on Tuesday, 31 October 2023, hundreds of youngsters dressed in costumes overwhelmed the streets of Shanghai. Halloween in China become popular due to the influences of Western expats and foreign teachers. (Photo by Alex Plavevski/EPA/EFE)

American artists have drawn criticism after making stunning, intricate sculptures by pouring hot liquid aluminium into anthills.