Carnivalia

my hair is red, my tires are black and their smoke is white

That particular trait — not being able to sleep when there’s something you can’t figure out — is in my mind the fundamental requirement for being a scientist. I was groggily reading my email Friday and found a request from one of my NASCAR contacts to explain something “simple”: why tires make white smoke, even though the tire is black and the skid marks are black.

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