Marie Sklodowska was born in Warsaw on 7 November 1867, the daughter of a teacher. In 1891, she went to Paris to study physics and mathematics at the Sorbonne where she met Pierre Curie, professor of the School of Physics. They were married in 1895.
The Curies worked together investigating radioactivity, building on the work of the German physicist Roentgen and the French physicist Becquerel. In July 1898, the Curies announced the discovery of a new chemical element, polonium. At the end of the year, they announced the discovery of another, radium. The Curies, along with Becquerel, were awarded the Nobel Prize for Physics in 1903.
Pierre's life was cut short in 1906 when he was knocked down and killed by a carriage. Marie took over his teaching post, becoming the first woman to teach at the Sorbonne, and devoted herself to continuing the work that they had begun together. She received a second Nobel Prize, for Chemistry, in 1911.
The Curie's research was crucial in the development of x-rays in surgery. During World War One Curie helped to equip ambulances with x-ray equipment, which she herself drove to the front lines. The International Red Cross made her head of its radiological service and she held training courses for medical orderlies and doctors in the new techniques.
Despite her success, Marie continued to face great opposition from male scientists in France, and she never received significant financial benefits from her work. By the late 1920s her health was beginning to deteriorate. She died on 4 July 1934 from leukaemia, caused by exposure to high-energy radiation from her research. The Curies' eldest daughter Irene was herself a scientist and winner of the Nobel Prize for Chemistry.
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Timothy John Berners Lee was born on 8 June 1955 and grew up in London. He studied physics at Oxford University and became a software engineer.
In 1980, while working at CERN, the European Particle Physics Laboratory in Geneva, he first described the concept of a global system, based on the concept of 'hypertext', that would allow researchers anywhere to share information. He also built a prototype called 'Enquire'.
In 1984, Berners Lee's returned to CERN, which was also home to a major European Internet node. In 1989, Berners Lee published a paper called 'Information Management: A Proposal' in which he married up hypertext with the Internet, to create a system for sharing and distributing information not just within a company, but globally. He named it the World Wide Web.
He also created the first web browser and editor. The world's first website, http://info.cern.ch, was launched on 6 August 1991. It explained the World Wide Web concept and gave users an introduction to getting started with their own websites.
In 1994, Berners Lee founded the World Wide Web Consortium at the Laboratory of Computer Science (LCS) at the Massachusetts Institute of Technology in Boston. He has served as director of the consortium since then. He also works as a senior research scientist at LCS which has now become the Computer Science and Artificial Intelligence Laboratory.
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