Athletes from North and South Korea wave unification flags as they arrive during the 2018 Winter Olympics opening ceremony. | (AP Photo/Charlie Riedel)

A SpaceX spacesuit in Elon Musk's red Tesla sports car, which was launched into space during the Falcon Heavy rocket's first test flight. | (SpaceX via AP)

A mahout bathes his elephant in the polluted water of the Yamuna river in New Delhi, India. | (REUTERS/Adnan Abidi)

A girl sleeps on a suitcase as she waits with her family for a travel permit to cross into Egypt from the southern Gaza Strip. | (REUTERS/Ibraheem Abu Mustafa)

People in animal costumes take part in pre-carnival festivities in Cameta, Brazil. | (REUTERS/Ueslei Marcelino)

A cafe in Athens. | (ORESTIS PANAGIOTOU/EPA-EFE/REX/Shutterstock)

A Chinese Opera performer smokes backstage before a performance at a school in Bangkok. | (EPA-EFE/RUNGROJ YONGRIT)

Workers remove stalks from red chili peppers on the outskirts of Ahmedabad, India. | (REUTERS/Amit Dave)

A Free Syrian Army fighter relaxes in al Bab, Syria. | (REUTERS/Khalil Ashawi)

Performers at a parade for the Montevideo Carnival in Uruguay. | (RAUL MARTINEZ/EPA-EFE/REX/Shutterstock)

Young candidates await the selection of the new living goddess, locally known as "Kumari," outside a Hindu temple in Patan, Nepal. | (AP Photo/Niranjan Shrestha)

A dog plays along the beach near Rossbeigh, Ireland. | (REUTERS/Clodagh Kilcoyne)

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