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Dan Collins is a Baton Rouge land man who has been battling the state in court over environmental violations he uncovered while working for the Department of Natural Resources. Collins talks about his whistle-blower lawsuit regarding Bayou Postillion.

Louisiana's coast is disappearing at the rate of about a football field an hour. Since the 1930s, the Gulf of Mexico has swallowed up an area the size of Delaware.

You can see the water encroaching in Delacroix in St. Bernard Parish, less than an hour southeast of New Orleans. Here, a narrow crescent of land known locally as the "end of the world" is where the road abruptly comes to a dead end; in the distance, you see the tops of now-submerged trees.