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HumansStone tools may place some of the first Americans in Idaho 16,500 years ago
Newly discovered stone artifacts support the idea that North America’s first settlers traveled down the Pacific coast and then turned eastward.
By Bruce Bower -
GeneticsThere’s no evidence that a single ‘gay gene’ exists
Many genetic factors with small effects combine with one’s environment to influence sexual behavior, researchers say.
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NeuroscienceClumps of cells in the lab spontaneously formed brain waves
Nerve cells fired coordinated signals in brain organoids, 3-D clusters of cells that mimic some aspects of early brain development.
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Life50 years ago, scientists thought they knew why geckos had sticky feet
50 years ago, scientists thought gecko feet had suction cups that allowed the animals to stick to surfaces.