From the early 1990s, a scandal rocked evolutionary biology: scientists discovered that songbirds — once thought to be strictly monogamous — engaged in what is politely called”extra-pair copulation.” In this unforgettable biology lesson about animal infidelity, TED Fellow Danielle N. Lee reveals how she utilizes hip-hop to teach mathematics, leading the audience in an updated version of Naughty by Nature’s hit”O.P.P.”