Stephen Hawking

The university said the historic thesis was the most-demanded item in its online repository

Arnav Sharma scored 162 in an IQ test

Physicist says mankind is running out of time

Richard Branson offered the physicist a seat, which he immediately accepted

'Technology has advanced at such a pace that aggression may destroy us by nuclear or biological war' says Hawking

Hospital sources say Hawking is in a good condition and is returning to Britain

Cosmologist speaks out on one of humanity's greatest challenges

Hawking warned technological developments also posed a risk to our civilisation

'We need to be part of a larger group of nations, both for our security and our trade' he says