A woman falls as police move in to disperse protesters in Trafalgar Square in London on September 26, 2020, at a “We Do Not Consent!” mass rally against vaccination and government restrictions designed to fight the spread of the novel coronavirus, including the wearing of masks and taking tests for the virus. (Photo by Justin Tallis/AFP Photo)

A student gets off a police vehicle which carried her to a high school to arrive in time for a college entrance exam in Seoul, South Korea, Thursday, November 18, 2021. About 510,000 high school seniors and graduates across the country are expected to take the College Scholastic Ability Test. (Photo by Ahn Young-joon/AP Photo)

The Eiffel Tour-the body language of balance. I came across this group of young adults from Sarajevo, Bosnia, having fun testing their balance two nights ago in on the Esplanade de Trocadero. (Photo and comment by Peter Turnley)

A new volunteer for the Ukrainian interior ministry's “Azov” battalion takes part in tests before heading to frontlines in eastern Ukraine, at the battalion's training centre in Kiev, Ukraine, August 14, 2015. (Photo by Gleb Garanich/Reuters)

Pablo Holcer tests out a VR system made by Neurable that allows the user to control with their thoughts as the EEG headset interprets thoughts into actions in the VR environment at SIGGRAPH 2017 in Los Angeles, California, July 31, 2017. (Photo by Mike Blake/Reuters)

An Army Sikorsky R-5 helicopter, undergoing record trials, demonstrates its lifting power by carrying 17 persons and pilot aloft as female onlookers wave in Bridgeport, Conn., January 10, 1946. During the tests records were claimed for altitude speed and both altitude and speed with payload. (Photo by Anthony Camerano/AP Photo)

A Chesterfield Borough Police telephone operator tests a gasmask with built in earpiece and microphone. The telephone service is considered one of the most important links in the coordination of ARP operations and must remain operational during air raids, 12th April 1939. (Photo by Fox Photos/Hulton Archive/Getty Images)

A woman reacts after getting a nasal swab taken to test for the coronavirus in Noida, on the outskirts of New Delhi, India, Tuesday, June 16, 2020. India is the fourth hardest-hit country by the COVID-19 pandemic in the world after the U.S., Russia and Brazil. (Photo by Altaf Qadri/AP Photo)