I’m strolling the grounds of the New York Botanical Garden, a quiet green space in the noisy heart of the Bronx. The sun is hot, but once I leave the neat, conventional garden beds and enter the Thain Family Forest, the air is cool under old-growth oak and hickory trees. And when the roar of a JFK-bound jet dies away, I can hear catbirds, white-eyed vireos and a kingbird running through their vocal repertoires… I’m walking the Spicebush Trail with Myla Aronson, a Rutgers University scientist who is the lead researcher on a groundbreaking study of biodiversity in cities across the globe—a study that refutes what she calls the myth of biotic homogenization. “Everyone assumes that because of globalization, cities are all the same in terms of the plants and animals you find there- mostly rats and pigeons,” Aronson says as we stroll.