In mathematics, the Fibonacci numbers are characterized by the fact that every number after the first two is the sum of the two preceding ones. Fascinatingly, Fibonacci numbers appear often and unexpectedly—in both mathematics and in nature. Branching in trees, the fruit sprouts of a pineapple, and the flowering of an artichoke embody the Fibonacci sequence. In this hypnotic video, woodworker Paul Sellers carves perfect Fibonacci wood spirals. These mathematically perfect coils will both delight and soothe you.