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LifeRare reptile holds clue to penis evolution
Preserved Victorian specimens reveal budding embryonic penis that disappears before adulthood.
By Susan Milius -
EarthParched parts of Earth expanding
More drylands, largely impacting developing nations, are forecasted for near future.
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Health & MedicineDaily drug shown effective in preventing HIV infections
After a history of controversy, preexposure prophylaxis has been demonstrated to work for HIV prevention.
By Laura Beil -
AnimalsCat-versus-virus arms race goes back millennia
Researchers have found evidence of an ancient arms race between Felis silvestris catus, the species familiar today as the domestic cat, and feline immunodeficiency virus.
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Health & MedicineEating meat officially raises cancer risk
Eating processed meats like bacon, ham and sausage causes cancer, says the World Health Organization.
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Quantum PhysicsLight mimics hotel with limitless vacancies
By mimicking a mathematician’s method for creating vacancies in a hotel with an infinite number of rooms, physicists may have found a way of increasing the amount of data that can be carried via light.
By Andrew Grant -
AnimalsSalamander ancestors could regenerate limbs
Salamanders and ancient amphibians share similar way of regenerating limbs.
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ClimateWi-Fi threatens weather forecasts
Interference from wireless technology threatens the usefulness of weather radar, meteorologists warn.
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AstronomyComet carries alcohol, sugar
Sugar and alcohol are just two of the ingredients that go into making a comet.
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NeuroscienceSigns of Alzheimer’s seen in young brain’s GPS cells
Signs of Alzheimer’s can show up in the brain’s compass decades before symptoms strike.
By Meghan Rosen -
AnthropologyPlagues plagued the Bronze Age
Ancient bacterial DNA provides first clues to Bronze Age plagues in Europe and Asia.
By Bruce Bower