By constantly expanding and taking up land, humans have reduced wildlife territories, disrupting the natural passages through which animals must travel to meet their needs. Known as 'ecological corridors', these pathways are key to protecting biodiversity. So how do wild species fit into an increasingly inhabited, concrete, developed Earth? Are we capable of sharing territories with other living species? Beyond creating enclosed, 'safe' reserves and sanctuaries, what are the solutions to preserve these wild areas? All over the world, scientists, environmental protectors and inhabitants of these lands are working together to revive these corridors and restore the free movement of wildlife.