Friends, family and colleagues gather to say goodbye to Stephen Hawking

Friends, family and colleagues of British scientist Stephen Hawking will gather Saturday to pay their respects at his private funeral in Cambridge, where he spent most of his extraordinary life. Hawking, who died on March 14 at the age of 76, was famously an atheist but his children Lucy, Robert and Tim have chosen the town's university church, St Mary the Great, to say their farewell.