"Measured from the arrival of European colonists to the present day, perhaps no landscape on the planet has changed more radically than the tallgrass prairie peninsula. Better known today for fields of corn and soybeans that stretch across Iowa, Illinois, and Indiana, this bioregion was once of the most dynamic ecologies on the continent, a mosaic of forests, wetlands, savannahs, and prairies. It was also a once a major cultural borderland, where...