We think of species taking a long time to adapt to changes in their surroundings. Not necessarily, says evolutionary biologist and ecologist Menno Schilthuizen. In his new book, "Darwin Comes to Town: How the Urban Jungle Drives Evolution" he asserts we can find evidence right in our own back yard. Schilthuizen says plants and animals can adapt quickly to survive. Things like mating preferences and diet are in flux when it comes to city living.