Scientists have found a way to grow hair in mice using human stem cells and a chemical found in McDonald’s french fries. Researchers were able to make “hair follicle germs” in the lab thanks to dimethylpolysiloxane, which is also used in McDonald’s fries. This is added to keep oil from foaming up while they are cooking the fries. Since we are clearly getting to a point of expertise that’s above our collective pay grade, check out more from Professor Junji Fukuda, of Yokohama National University at Metro UK. Or, just watch the video.