Juno, a Beluga whale, greets a young viewer at the Mystic aquarium in Connecticut, USA on December 5, 2015. (Photo by Tim Clayton/Corbis)

Children pour cold water on themselves under the control of fitness coach Margarita Filimonova (R) at local kindergarten number 317, with the air temperature at about minus 23 degrees Celsius (minus 9.4 degrees Fahrenheit), in Russia's Siberian city of Krasnoyarsk, February 5, 2013. (Photo by Ilya Naymushin/Reuters)

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The “EMIEW3” robot (R) demonstrates communicating with a visitor during a press preview in Tokyo on April 8, 2016. Japanese electronics giant Hitachi unveiled its humanoid customer service and guidance robot “EMIEW3” and “remote brain” robotics IT platform. (Photo by Toshifumi Kitamura/AFP Photo)

In this handout photo provided by Warner Brothers Pictures and Village Roadshow Pictures, Tom Cruise plays Lieutenant Colonel Bill Cage, a soldier who replays his last day while trying to fight aliens, in director Doug Liman's “All You Need Is Kill”. The film is set to premiere on March 14, 2014. (Photo by David James/Warner Brothers Pictures)

Two models sit in an acrylic “ZF-Car” from the German manufacturer of the same name at the Automechanika automotive service industry trade fair in Frankfurt am Main, Germany, 12 September 2016. The Automechanika Fair runs from 13 to 17 September 2016. (Photo by Boris Rössler/EPA)

Tightrope walker Tatian-Mosio Bongonga hangs from a tightrope as she pauses while scaling the Monmartre hill towards the Sacre Coeur Basilica (not pictured) in Paris, France, July 20, 2018. (Photo by Philippe Wojazer/Reuters)

A spectator waits for the start of the Jeremy Scott show during Fashion Week in New York, Thursday, February 8, 2018. (Photo by Andres Kudacki/AP Photo)

A woman villager cleans garbage in front of her house as flood hits Tanjungsari village in Tasikmalaya, Indonesia, February 23, 2018. (Photo by Adeng Bustomi/Reuters/Antara Foto)