Yellowstone National Park, America's first national park, was established in 1872, before Wyoming, Idaho, and Montana were states. Explore its countless natural wonders—from geysers and hot springs, to mountain lions and grizzly bears: | National Geographic TV

People actively hunt wolves to protect their livestock. But in some places wolves are being hunted towards extinction. Wolves are a critical keystone species in a healthy ecosystem. By regulating prey populations, wolves enable many other species of plants and animals to flourish. Without predators, such as wolves, the system fails to support a natural level of biodiversity. Just like beavers, wolves aide the ability for the forests and grasses to grow and water to accumulate. Wolves are importa

7.5K views · 181 reactions | Yellowstone National Park contains more than half of the world's geysers — and under them is a super volcano capable of world altering eruptions. | CBS Mornings | Facebook