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Metal coins imprinted with cryptocurrency logos placed on a computer board. (Ulrich Baumgarten/Getty Images)

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A member of the 321st Contingency Response Squadron security team stands next to a Ghost Robotics Vision 60 prototype during the Advanced Battle Management System exercise on Nellis Air Force Base, Nevada, Sept. 1, 2020. (US Air Force)

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A scientist pipettes a sample into a test tube while conducting medical research. (Getty Images/Westend61)

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Aviation machinists perform maintenance on a MQ-8B unmanned helicopter on the flight deck of the Independence-variant littoral combat ship USS Gabrielle Giffords (LCS 10), May 14, 2020. (U.S. Navy)

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Xi Jinping shakes hands with Chinese workers at a construction site in Port-of-Spain, Trinidad and Tobago, on June 1, 2013. (Frederic Dubray/AFP via Getty Images)

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Aerial view of residential buildings at night. (AedalPerspective Image/Getty Images)

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A worker at a construction site of a new bridge project on June 20, 2009 in Guiyang of Guizhou Province, China. (Photo by Wu Dongjun/Visual China Group via Getty Images)

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President of Turkey Recep Tayyip Erdoğan arrives at a press conference in Ankara, Turkey, on September 21, 2020. (Adem Altan/AFP via Getty Images)

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A Hawaii Air National Guard F-22 Raptor approaches a Wisconsin Air National Guard KC-135 Stratotanker to receive aerial refueling over the Pacific Ocean. (John Linzmeier/US Air National Guard)

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Demonstrators protest China’s genocidal campaign against the Uyghur people outside the Chinese Embassy in London, England, on January 19, 2020. (David Cliff/NurPhoto via Getty Images)