Fields Medal-winning mathematician passes away aged 89
Sir Michael Atiyah, a British mathematician who received the 1966 Fields Medal, also known as the 'Nobel for Mathematics,' passed away at the age of 89 on January 11.  Atiyah was best known for his co-development of a branch of mathematics called topological K-theory and the Atiyah-Singer index theorem. Atiyah was also the President of the Royal Society from 1990-1995.