The Higgs Boson has eluded scientists for centuries. Modern physicists believe that the discovery of the Higgs Boson could possibly be the most important molecular discovery of our time, and we may have found it.

All this week, we've been talking with our friends from Scientific American about endings — how cultures fade, and natural resources dwindle. Today, we’re focusing on something even bigger: the end of human life as we know it — in other words, the apocalypse. The question of course, is how will it happen? Nuclear war? a killer virus, or perhaps an environmental disaster?