Teenagers on roller skates hold on to each other as they are pulled by a vintage car to move along a street in Havana, Cuba March 19, 2016. (Photo by Ivan Alvarado/Reuters)

A girl types on a computer as she demonstrates the interior of the new Volvo S90 during the Auto China 2016 auto show in Beijing April 25, 2016. (Photo by Damir Sagolj/Reuters)

Three girls weep after they view a memorial for the rapper XXXTentacion, Wednesday, June 27, 2018, in Sunrise, Fla. The rapper was gunned down in a luxury sports car last week. (Photo by Brynn Anderson/AP Photo)

World's Greatest Swimming Pools: Four Seasons, Serengeti Pool, Tanzania. A show of elephants, buffalo and baboons awaits thanks to an active watering hole below the free-form infinity pool at this plush hideaway inside Serengeti National Park. Bonus: Because of infrared technology at the hole, guests can be notified on their bedroom TV when animals are approaching. When you've got word of wildlife on the horizon, catch them from your private terrace – or head back to the pool. (From $1,650). (Photo by Four Seasons)

A model walks the runway during the BLACK TAPE PROJECT show at New York Fashion Week Powered By Art Hearts Fashion at The Angel Orensanz Foundation on September 9, 2018 in New York City. (Photo by Arun Nevader/Getty Images for Art Hearts Fashion)

British actress Kate Beckinsale attends the InStyle And Warner Bros. Golden Globes After Party 2019 at The Beverly Hilton Hotel on January 6, 2019 in Beverly Hills, California. (Photo by Rich Fury/Getty Images)

Brain-on-a-chip. Dazzling in green and magenta this image shows the nerve fibres (in green) produced by neural stem cells (in magenta) as they grow on a synthetic gel. Captured by a technique known as confocal microscopy, the image is part of research shedding light on how tinkering with the environment can affect the way in which nerve fibres grow. (Photo by Collin Edington and Iris Lee/Massachusetts Institute of Technology/Wellcome Images)

Megan McKenna, Amber Turner and Yazmin Oukhellou sightings at Aristocats nightclub Mayfair on March 30, 2017 in London, England. (Photo by Goff Photos)