Sharing our city blocks with trees, birds, and other animals is a good thing. As strange as it sounds, urban wildlife helps control the spread of diseases typically passed from animals to humans. Unfortunately, as the world continues to urbanize, more and more of the natural spaces found within cities are being fragmented and replaced by new development, which threatens urban wildlife. See here why city-dwellers must rekindle their connection to the natural world and save the green spaces we have left in our cities.