Pope Francis greets the crowd from his popemobile in downtown Rio de Janeiro. Pope Francis touched down in Rio de Janeiro on Monday, starting his first foreign trip as pontiff and a weeklong series of events expected to attract more than a million people to a gathering of young faithful in Brazil, home to the world's largest Roman Catholic population. (Photo by Ueslei Marcelino/Reuters)

Karis, an 8 week old lion cub, growls at a pumpkin as she explores a Halloween treat put in her enclosure by staff at Blair Drummond Safari Park near Stirling, Scotland, Tuesday, October 29, 2013. (Photo by Andrew Milligan/AP Photo/PA Wire)

“Basunga”. Basunga (3 weeks-old newborn with albinism) is happily sleeping with his cousin. For now, he does not yet realize the difficulties he will face to integrate into the Congolese society as a PWA. The success of his integration will greatly depends of how he accepts himself and his skin condition a and how educated he will be. Photo location: Kinshasa, Congo RDC. (Photo and caption by Patricia Willocq/National Geographic Photo Contest)

Super-cell thunderstorms, whirling tornados and lightning bolts illuminating the sky – these photos capture the terrifying brilliance of American storms. (Photo by Brandon Goforth/Solent News & Photo Agency)

English fashion model Daisy Lowe seen at Christopher Kane at Tate Britain on Day 4 of London Fashion Week February 2017 on February 20, 2017 in London, England. (Photo by SAV/GC Images)

Open jaws of a Great White Shark Carcharodon Carcharias, South Africa. (Photo by Stephen Frink Collection/Alamy Stock Photo)

American actress and singer Hailee Steinfeld is seen in the Meatpacking District on December 14, 2019 in New York City. (Photo by Gotham/GC Images)

Polish supermodel Anja Rubik attends the Saint Laurent show as part of the Paris Fashion Week Womenswear Fall/Winter 2020/2021 on February 25, 2020 in Paris, France. (Photo by Swan Gallet/WWD/Rex Features/Shutterstock)