News
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Health & MedicinePrimate virus found in zoo workers
Viruses related to HIV can be found in the blood of some zoo staff and other people who work with primates, although the infections don't appear to be harmful.
By Ben Harder -
ArchaeologyHow agriculture ground to a start
A major advance in agriculture occurred around 11,000 years ago, when western Asians began to walk through patches of wild barley and wheat and scoop handfuls of ripened grains off the ground, a report suggests.
By Bruce Bower -
Blocked gene gives mice super smell
Deactivating a single gene can produce mice with an abnormally sharp sense of smell.
By John Travis -
AstronomyFinding the star that was
Sifting through archival images, astronomers have identified the star whose explosive demise was recorded by telescopes last year.