Mon May 12 2003 22:40: Unused angle on a story about New Hampshire's Old Man of the Mountain (R.I.P.): what if the other state quarter symbols start disappearing under mysterious circumstances? How will humankind react to the news that we're living in a bizarre, geological-scale Agatha Christie novel? Keep a close eye on the Delaware river, the Charter Oak, the Maryland statehouse, the Statue of Liberty, the Wright Brothers' plane in the Air and Space museum, the Pell Bridge, Camel's Hump Mountain, Federal Hill, the entire Louisiana Purchase and city of Chicago, Pemaquid Point Light (be vigilant, Mike), and the Gateway Arch. Coming soon: my overactive imagination has to worry about still more things, including the possibility that the sun itself might vanish.