Why Does E=mc2?: (And Why Should We Care?)The international bestseller: an introduction to the theory of relativity by the eminent physicists Brian Cox and Jeff Forshaw What does E=mc2 actually mean? Dr. Brian Cox and Professor Jeff Forshaw go on a journey to the frontier of twenty first century science to unpack Einstein's famous equation. Explaining and simplifying notions of energy, mass, and light while exploding commonly held misconceptions they demonstrate how the structure of nature