A woman smokes marijuana during a Global March for Marijuana in Medellin, Colombia, May 5, 2018. The annual Global Marijuana March is taking place in over 100 cities across the world in an effort to raise awareness of the benefits of medical cannabis and to call for the legalization of marijuana. (Photo by Fredy Builes/Reuters)

The pygmy marmoset (Cebuella pygmaea) is a small New World monkey native to rainforests of the western Amazon Basin in South America. It is notable for being the smallest monkey in the world at just over 100 grams (3.5 oz). It is generally found in evergreen and river edge forests and is a gum-feeding specialist

Volunteers stand and read the morning newspaper while “waiting for the bus” at Henley Beach on January 8, 2012 in Adelaide, Australia. Surrealist artist, Andrew Baines recruited 100 volunteers for this human installation, meant to illustrate corporate workers enjoying nature rather than waiting in a long queue for a trip to work. (Photo by Morne de Klerk/Getty Images)

Key Gompa (also spelled Ki, Kye or Kee) is a Tibetan Buddhist monastery located on top of a hill at an altitude of 4,166 metres (13,668 ft) above sea level, close to the Spiti River, in the Spiti Valley of Himachal Pradesh, Lahaul and Spiti district, India. It is the biggest monastery of Spiti Valley and a religious training centre for Lamas. It reportedly had 100 monks in 1855.

Without the use of any type of scuba equipment, divers descend to great depths armed with underwater guns, harpoons and strong line to stalk and hunt prey. Some of the best free-divers in the world can hold their breath for up to 5 minutes under water and go to depths greater than 100 feet.

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Chinese Artist Ai Weiwei holds some seeds from his Unilever Installation “Sunflower Seeds” at The Tate Modern on October 11, 2010 in London, England. The sculptural installation comprises 100 million handmade porcelain replica sunflower seeds. (Photo by Peter Macdiarmid/Getty Images)

An illustration showing scarecrows pulling a firewood cart beside a road is on display at Kakashi no Sato, or the Scarecrow's Hometown on September 10, 2014 in Himeji, Japan. In this district of Yasutomi in Himeji city, over 100 of scarecrows stand in farmlands and abandoned houses to illustrate the good old Japanese countryside and attract visitors. (Photo by Buddhika Weerasinghe/Getty Images)