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Science News for August 31, 2007


The 5 Ws of corn production

A study funded by Cargill Crop Nutrition found that varying nitrogen application rates can increase corn yield with similar or higher nitrogen rates, but may not improve grain quality. Researchers also discovered that one hybrid performed better than the other under both uniform and varied nitrogen applications.

SourceSoil Science Society of America·JournalSoil Science Society of America Journal·DateAug 31, 2007

Digital dandelions

Computer scientists at UC San Diego create a new algorithm to generate annotated Internet router graphs, mimicking key features of the Internet. The technique allows researchers to experiment with different network topologies and test the sensitivity of various techniques.

Accuracy of us cancer surveillance under threat

A report reveals a significant decline in US Veteran Affairs (VA) reporting of new cancer cases to California registries, starting from 2004. This omission could introduce 'uncorrectable bias' in epidemiological studies and hamper efforts to identify quality-of-care issues for VA patients with cancer.

SourceThe Lancet_DELETED·JournalThe Lancet·DateAug 31, 2007

When bivalves ruled the world

A recent study by UWM paleoecologist Margaret Fraiser suggests that elevated CO2 levels contributed to the Permian-Triassic mass extinction, with bivalves emerging as the only survivors. The research provides valuable insights into the impact of CO2 on marine ecosystems and could help scientists predict future oceanic changes.

SourceUniversity of Wisconsin - Milwaukee·JournalPaleobiology·DateAug 31, 2007

Inside the brain of a crayfish

Researchers studied crayfish brain function, discovering integration of sensory inputs from antennae, legs, and antennules for environmental awareness and hunting success. Crayfish use distinct senses to detect food, predators, and mates in their aquatic environment.

SourceUniversity of Virginia·JournalBiological Bulletin·DateAug 31, 2007