MANHATTAN — A children’s book written by a Kansas State University environmental educator aims to teach children about the tallgrass prairie ecosystem. “The Autumn Calf” by Jill Haukos, director of education for the Konza Environmental Education Program, tells a true story of a newborn bison calf born at the Konza Prairie Biological Station in fall 2012, according to a news release. A herd of about 300 wild bison lives on the 8,600-acre Konza Prairie, which is owned by K-State and The Nature Conservancy, as part of the research station’s native grazing and tallgrass prairie research.