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Stephen Hawking - who died aged 76 - battled motor neurone disease to become one of the most respected and best-known scientists of his age.

A man of great humour, he became a popular ambassador for science and was always careful to ensure that the general public had ready access to his work.

His book A Brief History of Time became an unlikely best-seller although it is unclear how many people actually managed to get to the end of it.

He appeared in a number of popular TV shows and lent his synthesised voice to various recordings.

Stephen William Hawking was born in Oxford on 8 January 1942. His father, a research biologist, had moved with his mother from London to escape German bombing.

Hawking grew up in London and St Albans and, after gaining a first-class degree in physics from Oxford, went on to Cambridge for postgraduate research in cosmology.

http://www.bbc.com/news/science-environment-15555565