Palestinian children warm themselves by a fire on a stormy day at Shati (beach) refugee camp in Gaza City January 18, 2016. (Photo by Mohammed Salem/Reuters)

“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)

Miniature books and furniture are displayed in the "library" of the Astolat Castle, a 3 metre (9 foot) tall dollhouse, currently on display in New York November 14, 2015. Appraised at $8.5 million, the Astolat Castle, weighs 363 kg (800 pounds) and has 29 rooms, according to local media. (Photo by Lucas Jackson/Reuters)

A scavenger sifts through garbage piled on the bank of Beirut river, Lebanon August 24, 2015. Lebanese protest organisers called for a fresh demonstration against the government on Saturday after two days of rallies that turned violent in central Beirut and wounded scores of people. The “You Stink” campaign has mobilised against the government's failure to solve a garbage disposal crisis, bringing thousands of people onto the streets in protests that have threatened the survival of the cabinet. (Photo by Mohamed Azakir/Reuters)

People wait at a bus stop during heavy rain in Kathmandu, Nepal on September 21, 2020. The government eased the coronavirus lockdown for economic activities despite the number of COVID-19 cases is on the rise in Nepal. (Photo by Narendra Shrestha/EPA/EFE/Rex Features/Shutterstock)

A red squirrel sniffs out nuts inside Christmas stockings as part of the festive celebrations and enrichment programme at Wildwood Escot Park in Ottery St Mary, Devon, United Kingdom on December 17, 2020. (Photo by Ben Birchall/PA Images via Getty Images)

The elephant cow Omysha dives under water in its enclosure at the Zoo in Zurich, Switzerland, Wednesday, February 3, 2021. (Photo by Alexandra Wey/Keystone via AP Photo)

A security officer looks at a scanning screen for checking passengers' temperature at the Istanbul Airport in Istanbul, Turkey, on June 9, 2020. Technology and innovation will top the precautions of Turkey's biggest airport Istanbul Airport against the COVID-19 in the post-pandemic era, according to the management of the airport. The management on June 9 presented their final preparations and measures taken against coronavirus while Turkish airline companies are preparing to resume their international operations the next day. (Photo by Yasin Akgul/Xinhua News Agency via Getty Images)