検索キーワード： ナレーター "Sandra Murphy" 科学・工学

Historic Yellowstone National Park captures the most interesting moments in the park’s history, the slices of life in Montana and Wyoming that provide an idea of what life was like for those who chose to explore this gloriously beautiful corner of the United States. There’s the presence of Native Americans in the early years of the area’s history, the early explorers and expeditions, its debut as the very first national park, the explosive growth of tourism, and the people who made history in this astonishing and mysterious Rocky Mountain landscape.

The North American prairie is an ecological marvel, a lush carpet of grass that stretches to the horizon, and home to some of the nation’s most iconic creatures—bison, elk, wolves, pronghorn, prairie dogs, and bald eagles. Plants, microbes, and animals together made the grasslands one of the richest ecosystems on Earth and a massive carbon sink, but the constant expansion of agriculture threatens what remains.