Friday's topic is science and explanations of science.
Albert Einstein is one of the most important figures in the history of the twentieth century. Time magazine chose him as the Person of the Century. The description of his scientific career keeps going and going. Yet can we explain what his most important theory is about? Can we grasp principles that have literally changed the world?
We can give it a try. Here's Albert Einstein's Theory of Relativity (In Words of Four Letters or Less). Here's a few smart people explaining his most famous equation.