(L-R) Playmates Monica Sims, Heather Rae Young and Hiromi Oshima attend the Playboy party with TAO at Spire Nightclub on February 4, 2017 in Houston, Texas. (Photo by Christopher Polk/Getty Images for Playboy)

Farmers clash with riot policemen during a protest outside the Greek Agriculture Ministry on March 8, 2017 in Athens, Greece. Two people were detained after the windows of two police vans were smashed as approximately 1,000 farmers, mainly from the island of Crete, took part in the protest. (Photo by Nikolas Georgiou/ZUMA Wire/Rex Features/Shutterstock)

Vietnam’s Son Doong cave, the largest in the world, could hold a 40-story skyscraper inside. The pristine ecosystem has its own river and jungle. Despite its size, Son Doong wasn’t discovered until 1991. It was lost again for nearly two decades and was fully explored for the first time in 2009. (Photo by Jason Speth/HuffPost)

A model takes photographs during the World Bodypainting Festival in Poertschach, Austria, July 1, 2016. (Photo by Heinz-Peter Bader/Reuters)

An alligator is pictured stuck in the mud of the dry Pilcomayo river, which is facing its worst drought in almost two decades, on the border between Paraguay and Argentina, in Boqueron, July 3, 2016. (Photo by Jorge Adorno/Reuters)

A sales assistant poses for photographs with a mealworm cookie in Seoul, South Korea, August 8, 2016. Insect-eating, or entomophagy, has long been common in much of the world, including South Korea, where boiled silky worm pupae, or beondegi, are a popular snack. Now, South Korea is looking to expand its insect industry as a source of agricultural income. (Photo by Kim Hong-Ji/Reuters)

A customer buys a box of bullits and a target of Osama Bin Laden October 3, 2001 at Blue Ridge Arsenal in Chantilly, VA. Guns sales have risen across America since the September 11th terrorist attacks. (Photo by Mark Wilson/Getty Images)

An Indian Brahmin and his family. (Photo by Hulton Archive/Getty Images). Circa 1890