There are four fundamental equations that determine physics of charged substances: Maxwell equations. But why are there four? Why not just one? Why do they look so complicated? This class will solve such questions! In this class, we will first go through the physical meaning of Maxwell equations, then introduce mathematical concept of differentials, and finally write Maxwell equations in terms of electromagnetic field.

From the nitrogen cycle to the Three Gorges dam to the electric arc steel furnace, this physics-based class examines how we're screwing up the planet - and how we might be able to save it.