How to get massive particles from gold.

After having explored our economic analogy for the force of electromagnetism, let us turn to the weak force.

And finally, here is how the famous Higgs boson gets into the picture.

Everyone knows what symmetry is, and the ability to spot it seems to be hard-wired into our brains. Mario Livio explains how not only shapes, but also laws of nature can be symmetrical, and how this aids our understanding of the universe.