It's an area bigger than Chicago, and it seems to be inflating. So should we worry?
Take the Norris Uplift Anomaly, for example: an area about 29 kilometers (18 miles) across lying along the north rim of the Yellowstone caldera which, local geologists now confirm, has started “deforming” under their very feet.
So, uh, here’s a quest... [5545 chars]