Second Sinkhole Opens Up in Same Town That Swallowed a Man [VIDEO]
March 5, 2013 When news broke about the sinkhole that opened up in Seffner, Florida swallowing a man and part of the house in which he lived, I was reminded of my geology coursework at the University of Maine. My geology professor, Joseph Chernoskey, explained that pretty much all of Florida sits on limestone, which is a very porous rock. And