A student wearing a face mask prays before the start of the annual college entrance examination amid the coronavirus pandemic at an exam hall in Seoul, South Korea, Thursday, December 3, 2020. South Korean officials are urging people to remain at home if possible and cancel gatherings as about half a million students prepare for a crucial national college exam. (Photo by Kim Hong-Ji/Pool Photo via AP Photo)

A woman shouting into a megaphone during a “Kill the Bill” protest in Manchester City Centre on April 3, 2021 in Manchester, United Kingdom. Protests around the United Kingdom have been held in opposition to the Police, Crime, Sentencing and Courts Bill. The proposed legislation, which would apply to England and Wales, covers a wide range of issues and would broaden the police's authority for regulating protests. (Photo by Mercury Press and Media)

View of a group of ostriches, in the gardens of the Palacio do Alvorada, in Brasilia, Brazil, 02 June 2020. The ostrich is the largest and heaviest bird in the world. When the chicks hatch they are between 25 and 30 cm tall, weighing about 900 grams. (Photo by Joedson Alves/EPA/EFE/Rex Features/Shutterstock)

A general view shows sculptures made of waste material titled “Trash People” by German Artist HA Schult (unseen), on April 2, 2014 in Ariel Sharon Park, in the suburbs of Tel Aviv. Hundreds of human-size figures constructed from 20 tons of recycled material, including iron, glass, computer parts, cans and more, will dominate the sky line of Tel-Aviv city and be placed in the park. (Photo by Jack Guez/AFP Photo)

A pro-Russian activist aims a pistol at supporters of the Kiev government during clashes in the streets of Odessa May 2, 2014. Police said a man was shot dead in clashes between a crowd backing Kiev and pro-Russian activists in the largely Russian-speaking southern port of Odessa, which lies west of Crimea, annexed by Moscow in March. (Photo by Yevgeny Volokin/Reuters)

The galactic core of the milky way occupied by two small wooden boats on July 2, 2014, in Isle of Wight, UK. The Milky Way shines in mesmerizing colourful patterns above the Isle of Wight in stunning photographs. Chad Powell used a DSLR camera to capture images of the spectacular constellation above the familiar beach scenes of England's largest island. The 22-year-old, who shot the pictures over a year of stargazing on the island, often stayed up until dawn to catch the most dramatic sky-scapes. Chad, a graphic designer from Ventnor, Isle of Wight, used foregrounds of abandoned theme parks, harbors and lighthouses against the illuminated sky. Minor adjustments were made to bring out the contrast and whites in the images. (Photo by Chad Powell/Barcroft Media)

A dancer poses with a new installation of art by British graffiti artist Banksy painted on the front door of the Hustler Club in New York, October 24, 2013. Known for his anti-authoritarian black-and-white stenciled images, which have sold at auction for upwards of $2 million, the British street artist is treating New Yorkers to a daily dose of spray-painted art – while eluding the police and incurring the wrath of New York Mayor Michael Bloomberg. (Photo by Eric Thayer/Reuters)

Kumbuka, a male silverback gorilla sits next to the keeper's chalk board in his enclosure at London Zoo, Thursday, January 2, 2014. Home to more than 850 different species, zoo keepers welcomed in the New Year armed with clipboards as they made a note of every single animal. The compulsory annual count is required as part of ZSL London Zoo's zoo license, and every creature, from the tiny leaf cutter ants to the huge silverback gorilla is duly noted and accounted for. (Photo by Kirsty Wigglesworth/AP Photo)