Science advocacy group Stated Clearly takes complex scientific concepts and explains them in a way everyone can understand using everyday language and simple graphics.

This time, they’ve tackled evolution. In an 11-minute video, Stated Clearly is to show how all living things are related by comparing the traits of whales, dolphins, and other sea mammals to human characteristics.

Next time you get in an argument about whether or not evolution is scientific fact, use this video. It’s simple enough even Republican politicians can understand it.