News
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Health & MedicineCaloric restriction extends life in monkeys, study finds
New study finds calorie restriction delays age-related diseases in monkeys. Another study reports that an immune-suppressing drug helps elderly mice live longer.
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AnthropologyMaize may have fueled ancient Andean civilization
A chemical analysis of skeletons from Peru’s Andes Mountains suggests that cultivation of key crop made building a prehistoric civilization possible.
By Bruce Bower -
PhysicsGraphene gains nearly perfect liquid status
Scientists have found that electrons in a layer of carbon atoms can become a strongly interacting swirling soup.
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PhysicsCapping the length of extra dimensions
The existence of a small, elderly black hole places a new upper limit on the length of any extra dimension, a new study suggests.
By Ron Cowen -
LifeHornets suffocate in bee ball
Researchers find a spike in carbon dioxide, along with an increase in heat, makes honeybees' enemies vulnerable.
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LifeClimate change shrinks sheep
Milder winters help small, weak lambs survive but more competition for food slows growth.
By Susan Milius -
EarthNew cyclone predictor
Researchers link occasional sea-surface warming in central Pacific with more, stronger hurricanes in North Atlantic.
By Sid Perkins -
LifeNew drug hits leukemia early
An experimental drug may stop a deadly leukemia in its early stages, a study of mice shows.
By Nathan Seppa -
ChemistryConcerns over bisphenol A continue to grow
Recent research finds that the hormone mimic may be more prevalent and more harmful than previously thought, highlighting why BPA is a growing worry for policy makers.
By Janet Raloff -
Health & MedicineSchizophrenia risk gets more complex
Three studies find that large collections of variants, rather than just a few key mutations, probably predispose someone to schizophrenia.
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Psychology2-year-olds possess grammatical insights
Toddlers discern basic rules for using nouns and verbs at least one year before speaking in complete sentences, French brain researchers report.
By Bruce Bower -
LifeSalamanders don’t regrow limbs from scratch
A closer look at regeneration in axolotl amputees shows that tissue replacement relies on cellular “memory.”