Two scientists have won the Nobel prize in physics for their work on the theory of the Higgs boson.
Peter Higgs, from the UK, and Francois Englert from Belgium, share the prize.
In the 1960s, they were among several physicists who proposed a mechanism to explain why the most basic building blocks of the Universe have mass.
The mechanism predicts a particle - the Higgs boson - which was finally discovered in 2012 at the Large Hadron Collider (LHC) at Cern, in Switzerland.
Continue reading the main story “Start Quote"I am overwhelmed to receive this award... I would also like to congratulate all those who have contributed to the discovery of this new particle”
End Quote Peter Higgs Emeritus professor of theoretical physics, University of Edinburgh Profile: Peter Higgs
"This year's prize is about something small that makes all the difference," said Staffan Normark, permanent secretary of the Royal Swedish Academy of Sciences.