Come along on an informative, whirlwind tour of urban species--from intelligent crows to backyard lichens--and discover that you are surrounded by wild nature, even in your own backyard.When biologist Hanna Bjørgaas spots a fairy cup lichen in Antarctica, she is surprised to recognize it from her own backyard in Oslo. When she returns home, she embarks on a journey into urban nature, visiting city parks, cemeteries, and concrete rooftops to investigate the species that live in urban spaces. Along the way, she meets corvids, songbirds, ants, pigeons, bats, sparrows, fungi, and linden trees--and the experts who study their surprising abilities to survive, and thrive, in the city.As Bjørgaas discovers, urban nature--and its unique mixture of species that have never lived together before in Earth's history--is valuable. More than half of the world's human population lives in densely populated areas--and plants and animals have followed us into cities.