Why do physicists do experiments deep underground?

Why do physicists do experiments deep underground?

To those who crave natural daylight, the idea of spending large chunks of time deep underground may seem like hell. But to particle physicists, this subterranean lifestyle is a price worth paying for the excellent radiation shielding provided by the overlying rock. In this video, Art McDonald of Queen's University in Canada briefly outlines the major benefits of taking your particle-physics lab to a land beneath our feet.

Check it out here.

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