Iggy Azalea (L) and Ariana Grande perform onstage during the 2014 Billboard Music Awards held at MGM Grand Garden Arena on May 18, 2014 in Las Vegas, Nevada. (Photo by Michael Tran/FilmMagic)

Phuket, Thailand. The girl is in the pool, which is higher than the land, and the elephant is on the land behind the pool. The photographer used an underwater bag to get a half submerged image. (Photo by Justin Mott)

Labourers who work nearby nap on a road as cars drive past in Chongqing Municipality, July 23, 2013. (Photo by Reuters/Stringer)

A student from “the cliff village” in Atule'er climbs newly-constructed steel ladders after school to go home for holidays, in Liangshan Sichuan province, China, November 19, 2016. The steel ladders which replaced the unsafe vine ladders shortened the time taken for the children to go home, from three hours to two. (Photo by Reuters/Stringer)

National Geographic has created “Air, Land & Sea: the 50 greatest wildlife photographs” exhibition. Here: CT4 Crocodile cave on the Salamat river. Set up with Nathan Williamson last chip rain came while we were with the nomads. (Photo by Michael Nichols/National Geographic)

A person dressed up as Saitama from One Punch Man attends the 2018 New York Comic Con in Manhattan, New York on October 4, 2018. (Photo by Shannon Stapleton/Reuters)

Young girls dress up in traditional costumes and pose for a selfie at the opening ceremony of the Leishan Miao new year festival in the city of Kaili, Guizhou province, China on November 23, 2015. (Photo by Imaginechina/Rex Shutterstock)

At least 43 people have been killed and more than 200 others wounded in an attack by Somali Islamist militants on a Nairobi shopping mall, the Kenyan Red Cross said on Sunday. The Somali Islamist group al Shabaab claimed responsibility for Saturday’s attack on the Kenyan capital’s Westgate mall, which is frequented by Westerners as well as Kenyans. Several foreigners, including a Canadian diplomat, were among the dead. Photo: Security officers secure an area inside the Westgate Shopping Centre. (Photo by Siegfried Modola/Reuters)