2020 is the year 2020, a year that will occur from January 1, 2020 to December 31, ,It is a common year starting on a Sunday, which means it will be 365 days long. The United Nations declared 2020 the International Year of Plant Health. The theme for New Year's Eve 2020 was announced as 'A New Era of Sustainability.' The world was affected by the COVID-19 pandemic in 2020, leading to its cancellation or postponement of many events and festivities. It was also marked by protests against COVID restrictions and vaccination mandates in various countries. The New Year's Eve celebration in London, UK, was canceled due to COVID restrictions, and the Sydney New Year's Eve Fireworks were replaced with a virtual fireworks display. The year was marked by the 75th anniversary of the liberation of Auschwitz, the Holocaust Memorial Day, and the 250th anniversary of the first publication of Charles Darwin's On the Origin of Species. In science, 2020 was marked by a number of discoveries, such as the detection of gravitational waves from colliding neutron stars and the discovery of water ice on Mercury.

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