Sigurd Olson (1899-1982) was acknowledged during his lifetime as a leader of the American environmental movement, an emblematic figure for a generation of activists. As a writer, teacher, and activist who was a harbinger of the raising of America’s ecological consciousness, Olson’s history, writings, and This content was curated by…

Every one to three years (depending on region) state and federal agencies survey and monitor gray wolf populations. These reports summarize the best available information on the status of gray wolves in specific regions in the United States.