You need this hole in the head—to be smart

University of Adelaide researchers have shown that intelligence in animal species can be estimated by the size of the holes in the skull through which the arteries pass.

Biologists discover bacteria communicate like neurons in the brain

Biologists at UC San Diego have discovered that bacteria—often viewed as lowly, solitary creatures—are actually quite sophisticated in their social interactions and communicate with one another through similar electrical ...

Big brains attributed to mother's care

The evolution of big-brained mammals may be due to maternal investment, rather than metabolism, according to a new study by scientists at UCL (University College London) and the University of Cambridge.

How social rank can trigger vulnerability to stress

Stress is a major risk factor for a range of psychopathologies. However, stress does not affect everyone equally: in the face of sustained adversity, some people develop depression symptoms while others adapt and remain resilient. ...

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