News
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HumansHumans’ entry into Europe pushed earlier
Homo sapiens fossils from Italy and England point to an early arrival and a longer time living alongside Neandertals.
By Bruce Bower -
PhysicsThe sound of screech
Auditory experts decipher the blood-curdling nature of fingernails on a chalkboard.
By Devin Powell -
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LifeNearness key in microbe DNA swaps
Close quarters, like those inside the human body, are the most important factor in determining how often bacteria pick up one another’s genes.
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Health & MedicineBrain gene activity changes through life
Studies track biochemical patterns from just after conception to old age.