[LarryLied]

in parts of Yellowstone the ground has risen over seventy centimeters this century.

It is all the people on both coasts. Their weight is causing the edges of America to droop and the center to rise.

[Poohbah]

Actually, it's part of the "crustal rebound" of the North American plate since the end of the last Ice Age. Basically, when the ice sheet formed, it pressed down on the rock. Now, with the weight off, it's coming back up.

[6ppc]

Their weight is causing the edges of America to droop and the center to rise.

Well...it's pretty obvious that Jerry Nadler is the problem on one coast. I wonder who's causing the problem on the other?