4/5 After an ultimatum to his hosts, Will receives a crash course in particle physics.
Susan Hulme reports from Westminster.
Sean Curran reports from Westminster.
3/5 Will is still baffled and decides to issue an ultimatum to his Cern hosts.
Aasmah Mir asks if Scottish society has been split in two by the independence referendum.
2/5 Will Self continues his 50km walking tour of the Large Hadron Collider at CERN near Geneva
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