Mark Elliot Zuckerberg is an American computer programmer and Internet entrepreneur. He is best known for co-creating the social networking site Facebook, of which he is chief executive and president. It was co-founded as a private company...

George Perry Floyd Jr. was an African American man who died during a police arrest in Minneapolis on May 25, 2020. Protests in response to both Floyd's death, and more broadly to police violence against other black Americans, quickly spread...

Sir Timothy John "Tim" Berners-Lee, also known as "TimBL", is an English computer scientist, best known as the inventor of the World Wide Web. He made a proposal for an information management system in March 1989, and he implemented the fir...

Emmett Louis Till was a 14-year-old African-American who was lynched in Mississippi in 1955, after a white woman said she was offended by him in her family's grocery store. The brutality of his murder and the fact that his killers were acqu...

Alan Turing was a mathematician who in 1937 suggested a theoretical machine, since called a Turing Machine, that became the basis of modern computing. In 1950 he suggested what has become known as a "Turing's test," still the criterion for...

Adolf Hitler was an Austrian-born German politician and the leader of the National Socialist German Workers Party (German: Nationalsozialistische Deutsche Arbeiterpartei, abbreviated NSDAP), commonly known as the Nazi Party. He was Chancell...

The Wright brothers, Orville (1871–1948) and Wilbur (1867–1912), were two American brothers, inventors, and aviation pioneers who are credited with inventing and building the world's first successful airplane and making the first controlled...

Marie Sklodowska Curie was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity. She was the first woman to win a Nobel Prize, the first person and only woman to win twice, the only person...

Alexander Graham Bell was an eminent Scottish-born scientist, inventor, engineer and innovator who is credited with inventing the first practical telephone. Bell's father, grandfather, and brother had all been associated with work on elo...

Thomas Alva Edison was an American inventor and businessman who developed many devices which greatly influenced life in the 20th century. Dubbed "The Wizard of Menlo Park" by a newspaper reporter, he was one of the first inventors to apply...

Eduard Suess was a geologist who was an expert on the geography of the Alps. He is responsible for discovering two of the Earth's major now-lost geographical features, the supercontinent Gondwana (proposed 1861) and the Tethys Ocean. Sue...

Joseph Ritter von Fraunhofer is known for discovering the dark absorption lines known as Fraunhofer lines in the Sun's spectrum, and for making excellent optical glass and achromatic telescope objectives. In 1814 Fraunhofer invented the...

Richard Trevithick was a British inventor and mining engineer from Cornwall, UK. His most significant contribution was to the development of the first high-pressure steam engine. He also built the first full-scale working railway steam loco...

Napoleon Bonaparte was a French military and political leader who rose to prominence during the latter stages of the French Revolution and its associated wars in Europe. As Napoleon I, he was Emperor of the French from 1804 to 1814 and a...

In 1795 Jean Baptiste Joseph Delambre was admitted to the Bureau des Longitudes, becoming President in 1800. In 1801 he was appointed secretary to the Académie des Sciences making him the most powerful figure in science in France. In 17...