Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588 , USA;

内布拉斯加州立大学林肯分校化学系， 林肯内布拉斯加 68588；

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Charles Wortmann at the University of Nebraska-Lincoln says a one-time tillage may be used to correct a problem like aggressive weeds.

VOA: special.2010.09.28

Susan Swearer is a psychologist at the University of Nebraska-Lincoln and co-director of the Bullying Research Network.

VOA: special.2010.04.22

Researcher Reed Johnson, now at the University of Nebraska-Lincoln, says the study suggests that the damaged proteins are unable to respond effectively when attacked.

VOA: special.2009.09.15

Rachael Joyner at Florida Atlantic University, Phillip Lucas and Kendra Desrosiers at Howard University, Tracy Boyer at University of North Carolina, Michelle Chan at Pepperdine University, Chris Welch at University of Nebraska-Lincoln, Ben Doody at Fairfield and Chris Burcham at Tulane University contributed to this article.

CNN: Campus Politics: From storming dorms to abject apathy

The area is in the midst of moderate to severe drought, according to the U.S. Drought Monitor at the University of Nebraska at Lincoln.

CNN: STORY HIGHLIGHTS

The widespread blazes are more typical of the wildfires that break out in the grasslands of the Midwest and Great Plains this time of year, said Mark Svoboda, a climatologist at the National Drought Mitigation Center at the University of Nebraska-Lincoln.

WSJ: Brush Fires Sear Region