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 latest book, "Darwin Comes to Town: How the Urban Jungle Drives Evolution," he asserts we don’t have to look far for evidence: Schilthuizen says plants and animals can adapt quickly to survive. Things like mating preferences and diets are in flux when it comes to city living.