Sinkholes are a growing problem. What exactly are they? ->
Environmental activist Erin Brockovich spoke this weekend to residents in Louisianan who had to evacuate their homes after an alleged industrial failure caused a gigantic sinkhole. ->
Calling the hole in the capital city a "sinkhole" is a misunderstanding that masks a much more dangerous reality for over a million people who live in the area.
Residents of Assumption Parish, La., have a sinking feeling and "hole" lot to worry about.
From volcanoes to nuclear weapons tests and sinkholes, researchers who study giant collapse structures hope to understand what happens when Earth caves in.
