Humans
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Health & Medicine
Add penis bacteria to the list of HIV risk factors
Certain bacteria found on the penis raise the risk of HIV infection, a new study finds.
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Health & Medicine
Baby-led weaning won’t necessarily ward off extra weight
Babies allowed to feed themselves gained similar amounts of weight as babies spoon-fed by caretakers.
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Health & Medicine
Cows produce powerful HIV antibodies
For the first time in any animal, researchers elicit broadly neutralizing antibodies against HIV. Cows’ antibodies could help with drug development.
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Archaeology
Humans first settled in Australia as early as 65,000 years ago
Australia may have said “G’day” to humankind thousands of years earlier than previously believed.
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Health & Medicine
Common drugs help reverse signs of fetal alcohol syndrome in rats
A thyroid hormone and a blood sugar drug affect levels of a hormone needed for brain development, study in rats shows.
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Genetics
Dog domestication happened just once, ancient DNA study suggests
DNA of ancient canines counters idea that dogs were domesticated twice, in Europe and Asia.
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Archaeology
Copper in Ötzi the Iceman’s ax came from surprisingly far away
Copper for the ancient Iceman’s blade traveled about 500 kilometers to his northern Italian home region.
By Bruce Bower -
Life
These bacteria may egg on colon cancer
Streptococcus gallolyticus may goad colon cancer growth.
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Health & Medicine
The fight against gonorrhea gets a potential new weapon: a vaccine
A vaccine used in New Zealand to curb meningitis also appeared to drop gonorrhea infections, results that hint at a way to make a gonorrhea vaccine.
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Health & Medicine
Drinking sugary beverages in pregnancy linked to kids’ later weight gain
Consuming sugary drinks while pregnant may mean kids are heavier when they reach elementary school age.
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Anthropology
Fossil tooth pushes back record of mysterious Neandertal relative
A Denisovan child’s fossil tooth dates to at least 100,000 years ago, researchers say.
By Bruce Bower -
Archaeology
Pin-drop test pops Greek amphitheater’s acoustic claims
Analysis of an ancient Greek amphitheater’s ability to carry sounds reveals overblown tour guide claims.