Increasingly, as we become ever more city-centric, species and ecosystems crafted by millions of years of evolution teeter on the brink of extinction – or have already disappeared. However, a growing band of ‘urban ecologists’ is beginning to realize that natural selection is not so easily stopped. In ‘Darwin Comes to Town’, author Menno Schilthuizen shows us that evolution can happen far more rapidly than the celebrated scientist had ever dared to dream.