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PNS Daily Newscast - August 13, 2020 

Minutes after Biden selected Harris as VP, she throws first punch at Trump; teachers raise their hands with safety concerns.

2020Talks - August 13, 2020 

Joe Biden and Kamala Harris make their first public appearance as running mates. President Trump calls Georgia's Marjorie Taylor Greene a GOP "star," despite her support for conspiracy theory QAnon.

Can Iowa Help Gulf Dead Zone?

July 30, 2007

This year could see of the biggest "dead zone" in waters of the Gulf of Mexico since records have been kept and part of the solution could be upstream in Iowa. The dead zone is an area with almost no oxygen to support marine life. Doctor Rick Cruse, director of the Iowa Water Center, says a combination of climate and nutrients flowing down the Mississippi River are the likely culprits and Iowa farmers can make a difference if they go back to crop rotation practices of the past.

"Going back to a longer rotation with other crops that are not nitrogen fertilizer users would be a very positive step."

Scientists at the National Oceanic and Atmospheric Administration believe the dead zone could grow to over 8,500 square miles this summer, the largest since observations began in 1985. Cruse notes that researchers will be keeping a close eye on long-term trends.

"Does it consistently get bigger with time? If it is getting bigger with time then it's more than just one of these things that happen every now and then."

According to the United Nations' 2003 Global Environment Outlook, since the 1960s the number of seasonal hypoxic areas or dead zones worldwide has doubled every 10 years.

Dick Layman/Eric Mack, Public News Service - IA