CERN's Large Hadron Collider is one of the few scientific experiments to sparked wide-spread media coverage, particularly with the 2012 announcement of the discovery of the long-sought Higgs boson. So what really goes on at CERN and why the hubbub about the Large Hadron Collider, known as the LHC?
There are many theories in particle physics that cannot be tested in experiments. Does this make it unscientific? This debate, featuring one of our favourite theoretical physicists, David Tong, explores the question.
By the 1970s physicists had successfully tamed three of the fundamental forces using a sophisticated construct called quantum field theory. The trouble was that the framework seemed to fall apart when you looked at very high or very low energy scales. So how could these be thought of as valid theories? It's a question physicists are still grappling with today.