Experts say much of Florida sits on a system of limestone caverns which are subject to water erosion, causing them to collapse.

BBC: Florida sinkhole: Jeffrey Bush home partially demolished

My Tumblr is a ton of fun but I have more to say on the subject!

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Baseball Commissioner Bud Selig has declined to comment on Biogenesis, other than to say it is the subject of a "very thorough investigation" by MLB.

WSJ: Report: Baseball pays for clinic documents

Why, you might ask, as a man do I feel like I have anything to say on this subject?

FORBES: We Need A New Religion

That was basically it, as far as specifics went, but it was still a good deal more definitive than anything News Corp. has had to say on the subject to date.

FORBES: News Corp. Admits 'World's Worst-Kept Secret': It's Planning ESPN Clone

Had the professor attended not the debate on special-needs children on the floor, but, say, hearings on the same subject in the Education Select Committee, he would have formed a quite different impression of Parliament's effectiveness.

ECONOMIST: The golden age of the Commons

White House officials say Lott was apparently angered by Vice President Al Gore's latest comments on the subject at a conference in Detroit.

CNN: AllPolitics - Another Snag In Herman Nomination