Bob Marshall en New Science Shows Mississippi River Water Could Kill Marshes, Not Grow Them <p>The centerpiece of <a href="">Louisiana's Master Plan </a>to stem coastal erosion is this: divert the Mississippi River to let it flow over the marsh. Sediment in the river is supposed to stick and build up the wetlands, keeping more Louisiana land above water as sea levels rise.</p> Thu, 11 Apr 2013 06:00:00 +0000 Eve Troeh 32997 at