Yellowstone Supervolcano Beneath the peaceful beauty of Yellowstone lies one of the most powerful forces on Earth — a supervolcano capable of changing the entire planet in a single eruption. Scientists say it’s overdue, silent, and building pressure beneath our feet. If it ever woke up, ash could blanket states, skies could turn dark, and life as we know it would shift in an instant. Some believe the animals, the geysers, even the sudden ground rises are quiet warnings we’re not paying attention

When Yellowstone’s supervolcano erupted 2.1 million years ago, it made a hole the size of Rhode Island. Makes you wonder what will happen the next time it erupts. | National Geographic TV