Chad asks “Brolympus, as I was running on the local track yesterday, I was wondering why tracks are oval-shaped. Why are tracks oval?”
This question reminds me of something my math teacher used to tell me after I asked a question: “There are no dumb questions, just dumb people who ask questions.” But seriously, asking why tracks are oval is kind of like asking why the sky is blue. According to Wikipedia, “Rayleigh scattering of sunlight in the atmosphere causes diffuse sky radiation, which is the reason for the blue color of the sky and the yellow tone of the sun itself.” So there’s your answer. Rayleigh scattering.