Many residents and visitors see Louisiana's wetlands as priceless. But one group is trying to show how much value they really have to our planet's future.

When an animal, plant ... nutria established themselves in marshy wetland areas near permanent freshwater sources, particularly in Louisiana and Maryland. Since then, they have been spotted ...

Louisiana has more than 3 million acres of wetlands, vast expanses that teem with animals, trees, swamps, water and wildness. They're part of the state's culture, its lifestyle, its tourism ...