The following is an excerpt from the Lost in Space-Time newsletter. Every month, we Give a keyboard to a physicist or mathematician and let them talk about some fascinating ideas from their corner of the universe. You can sign up for Lost in Space-Time for free here.
Our world is bewildering in its diversity, but all known natural phenomena can be divided into just a few categories. Four of them – gravity, electromagnetism, strong nuclear, and weak nuclear – are…
Source: www.newscientist.com