Yellowstone Supervolcano May Rumble to Life Faster Than Thought
https://en.wikipedia.org/wiki/Yellowstone_Caldera
https://en.wikipedia.org/wiki/Supervolcano
A new study of ancient ash suggests that the dormant giant could develop the conditions needed to blow in a span of mere decades.
https://en.wikipedia.org/wiki/Yellowstone_Caldera
https://en.wikipedia.org/wiki/Supervolcano