A world-changing super-eruption of the supervolcano under Yellowstone is now almost a cliché in disaster movies and documentaries. But there's a good chance it may never actually happen.

Scientists want to drill into a currently sleeping supervolcano to learn more about it. The payoff would be huge, but so are the risks.

Don't worry, the supervolcano under Yellowstone isn't going to kill us. Yet.