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Latest Iowa State University Stories

2011-08-29 20:56:31

Collaboration helps middle-aged couples with memory tasks, but not as effective for older couples Effective memory is a key ability for independent living in later life, and a new Iowa State University study is among the first to report that social partners can help extend memory. The study also found that the collaboration that helps middle-aged couples with memory tasks doesn't seem to be as effective for couples older than 70. Jennifer Margrett, an assistant professor in human...

2011-08-10 22:54:17

From the kinds that people sneeze at, to the kinds that have prickly seeds that stick to pant legs, there are many different types of plants in grasslands around the world. According to a new analysis of plants in grassland ecosystems around the world, it turns out that most of those plant species are important. Brian Wilsey, associate professor, and Stanley Harpole, assistant professor, both in Iowa State University's Department of Ecology, Evolution and Organismal Biology, are authors...

2011-07-25 23:46:55

Soil quality, water quality, and possibly even farm profits will all benefit by using a perennial cover crop on corn fields that allows for similar yields to traditional farming methods, according to Iowa State University research. Using standard agronomic practices and managing a perennial cover crop between rows of corn can keep soil, nutrients and carbon in the fields, a three-year study says. Plus, farmers will still be able to yield 200 bushels per acre, the study showed. For the study,...

2011-06-20 23:51:00

Although parents appreciate having media ratings systems to help protect their kids from questionable content in movies, video games and television, the current age-based system doesn't meet their needs, according to a new study led by Iowa State University's Douglas Gentile. The study found that parents would prefer media ratings that focus on detailed content information. A national sample of 2,392 parents was surveyed by independent research firms -- Harris Polls and Research Now -- in the...

2011-06-20 13:37:50

Laura Jarboe pointed to a collection of test tubes in her Iowa State University laboratory. Some of the tubes looked like they were holding very weak coffee. That meant microorganisms "“ in this case, Shewanella bacteria "“ were growing and biochemically converting sugars into hydrocarbons, said Jarboe, an Iowa State assistant professor of chemical and biological engineering. Some of the sugars in those test tubes were produced by the fast pyrolysis of biomass. That's a...

2011-05-26 21:01:23

The long, slow decay of carbon-14 allows archaeologists to accurately date the relics of history back to 60,000 years. And while the carbon dating technique is well known and understood (the ratio of carbon-14 to other carbon isotopes is measured to determine the age of objects containing the remnants of any living thing), the reason for carbon-14's slow decay has not been understood. Why, exactly, does carbon-14 have a half-life of nearly 6,000 years while other light atomic nuclei have...

2011-05-24 13:06:00

MINNEAPOLIS, May 24, 2011 /PRNewswire/ -- Cargill today announced it is making a significant in-kind software contribution to Iowa State University (ISU) to aid in its efforts to improve swine nutrition and pork production. Cargill's Animal Nutrition unit is licensing its Pork MAX® patented nutritional software to ISU's Department of Animal Science. This innovative software will be used in ISU's applied swine nutrition program, which includes research, teaching and...

2011-05-10 15:47:33

Douglas Gentile is painfully aware of how research on the effects of video games on kids is often oversimplified to say that games are either "good" or "bad." The associate professor of psychology at Iowa State University has had his own research typecast on the "bad" side with studies on violent video game's effects and video game addiction, even though he's also done studies demonstrating the benefits of games. A new article by Gentile appearing in the journal Child Development Perspectives...

2011-04-29 12:19:42

Iowa State University's Malika Jeffries-EL says she's studying doing structure-property studies so she can teach old polymers new tricks. Those tricks improve the properties of certain organic polymers that mimic the properties of traditional inorganic semiconductors and could make the polymers very useful in organic solar cells, light-emitting diodes and thin-film transistors. Conductive polymers date back to the late 1970s when researchers Alan Heeger, Alan MacDiarmid and Hideki Shirakawa...

2011-04-18 22:27:28

When your family members gather at a picnic in your backyard, there may be 10 to 20 people -- maybe more -- enjoying your barbecue. When flies visit your party, be glad they don't bring their entire family. Houseflies have more than 152,000 cousins. And those are just the ones we know about. An Iowa State University researcher is one of a team of scientists who have recently researched the fly family tree -- one of the most complicated in the animal world. "It really isn't a tree, it's sort...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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