Neutrino experiments in bubble chamber
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Doubt over neutrino experiment saves scientist's underwear

In September 2011, the Opera experiment at the Cern laboratory in Switzerland and Italy's Gran Sasso lab reported it had seen particles called neutrinos evidently travelling faster than the speed of light.

The team has now found two problems that may have affected their test in opposing ways: one in its timing gear and one in an optical fibre connection.

Professor Jim Al-Khalili said last year that he would eat his boxer shorts if the results obtained in September turned out to be true.

Speaking on Thursday, Professor Al-Khalili told Pallab Ghosh while it would have been great if the theory had been proved correct, it now looked more likely that his underwear was safe.

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