Introduction Twice each year, one of nature’s greatest spectacles unfolds largely unnoticed. As the seasons change, billions of birds leave their breeding grounds and embark on journeys that may span …
Introduction Stretching from the Canadian Prairies through the central United States and into northern Mexico, the Great Plains form one of the largest temperate grassland ecosystems on Earth. Although they …
Introduction From the frozen forests of Canada to the tropical rainforests of the Amazon and the windswept grasslands of Patagonia, the Americas are home to one of the world’s greatest …
Introduction In 1995, gray wolves returned to Yellowstone National Park after an absence of nearly 70 years. Their reintroduction marked one of the most closely watched wildlife restoration projects in …