Archive: 5/07/2007

Amoebae control cheating by keeping it in the family

No one likes a cheater, even a single-celled one. New research from Rice University shows how cooperative single-celled amoebae rely on family ties to keep cheaters from undermining the health of their colonies. The research ...

dateJul 05, 2007 in
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Birds take cues from their competitors

The idea that animals other than humans can learn from one another and pass on local traditions has long been a matter of debate. Now, a new study reveals that some birds learn not only from each other, but also from their ...

dateJul 05, 2007 in
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Prion propagates in foreign host

Prions -- infectious, oddly-folded proteins that are the main suspects in fatal neurodegenerative diseases such as Cruetzfeldt-Jakob and bovine spongiform encephalopathy, or "mad cow" -- remain mostly a mystery to scientists. ...

dateJul 05, 2007 in
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Kamchatka volcano blows its top

Klyuchevskoy (pronounced Kloo-shef-skoy), a stratovolcano located in the north central region of the Kamchatka Peninsula, is blasting ash up to 32,000 feet in the air, and has diverted air traffic headed toward the Far East. ...

dateJul 05, 2007 in Earth Sciences
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Holograms make for better vision tests

A new paper published in the July 1 issue of OSA's Optics Letters shows that researchers in Australia have created a new one-step test that uses holograms to diagnose the astigmatic error of the human eye, a key measurement ...

dateJul 05, 2007 in Medical research
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