Flooding along the Mississippi River continues to move south


A hay bale get swept away by the rising Mississippi River near Commerce, MO on Dec. 31, 2015 (Missouri National Guard/Flickr)
A hay bale gets swept away by the rising Mississippi River near Commerce, Mo. on Dec. 31, 2015 (Missouri National Guard/Flickr)
Nick Fetty | January 5, 2016

Deadly flooding along the Mississippi River surges southward this week as areas of Tennessee, Arkansas, and Mississippi are expected to reach moderate to major flood stages.

The river is expected to crest early this week along the Tennessee-Arkansas state line and then along the Arkansas-Mississippi state line later in the week. Parts of the Mississippi River along Louisiana may not crest for another week and half.

Seven million people in 15 states are facing the threat of flooding and so far 29 have lost their lives in Illinois and Missouri.

Missouri governor Jay Nixon issued a federal emergency declaration for his state on Saturday which was approved by President Barack Obama.

“The fast-rising flood water inundated several thousand homes and businesses and left behind a trail of destruction, debris and refuse that will have to be cleaned up quickly so that rebuilding can begin and the region can recover,” Gov. Nixon said in a press release. “I appreciate the debris removal assistance the federal government has agreed to provide, and the speed with which the president responded to our request. Federal assistance with debris removal can help ensure the region moves forward from this historic disaster.”

Though Iowa has not been devastated by flooding, heavy rains in the middle of December likely contributed to high river levels south of the Hawkeye State. Des Moines saw 3.78 inches of rain between December 12 and 14 which shattered the previous December precipitation record of 3.72 inches set in 1931. Last week Iowa governor Terry Branstad deployed roughly 45 Iowa National Guard members to assist with flood efforts in Missouri.

Tulane researchers studying mockingbird songs to gauge effects of lead pollution


 

A mockingbird perched on a branch in Mexico. (Dennis Jarvis/Flickr)
A mockingbird perched on a branch in Mexico. (Dennis Jarvis/Flickr)

Nick Fetty | January 20, 2015

Researchers at Tulane University in New Orleans are studying songs sung by mockingbirds to determine the effects of lead levels in the environment.

Dr. Renata Ribeiro – an adjunct professor in the Department of Ecology and Evolutionary Biology – has been studying the Northern Mockingbird. As the name implies, these birds often imitate the songs sang by other birds as well as car alarms, emergency sirens, and other sounds. The singing ability of male mockingbirds is crucial to finding a mate.

Ribeiro and other researchers are studying how the Northern Mockingbird and its songs are affected by lead pollution which contaminates much of the soil in The Big Easy. A 2011 study by Tulane University found that nearly two-thirds of New Orleans homes and yards contain “dangerous” levels of lead. Researchers attributed the high levels of lead to the demolition and renovation of houses after Hurricane Katrina as well as the large number of homes constructed before lead was banned from house paint in 1978. The Louisiana Department of Environmental Quality has also reported air quality concerns in the state’s biggest city. Exposure to unsafe levels of lead and other environmental pollution has been tied to learning disabilities in children as well as neurological damage in animals.

Ribeiro’s efforts are part of a one-year study sponsored by the Morris Animal Foundation. She and her team will return to the field next month as the birds become more active again in preparation for mating season.

On the Radio: The Dead Zone


Photo by Goddard Photo and Video; Flickr

This week’s On the Radio segment covers actions being taken to combat the growing dead zone in the Gulf of Mexico. Listen to the audio below, or continue reading for the transcript.

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