A new study, published July 6, 2026, in the journal Nature Communications, suggests that two of the best-known trends in ...

For nearly 30 years, a landmark study shaped how scientists understood the relationship between brain and body size in ...

Recent research challenges the idea that natural selection favored larger human brains. Scientists analyzed fossil skulls and ...

Photo: Katerina Harvati Replicas of a Homo habilis skull (right) and an early Homo sapiens skull (left), illustrating two key ...

For most of human evolution, the story of the brain seemed to move in one direction. It got bigger. That long rise is still there in the fossil record. But a new analysis argues that the trend did not ...

The evolution of the human species is marked by an increase in brain size. Now new research suggests that could be partly dependent on increases in prenatal oestrogen - revealed by looking at the ...

A new study has examined how mothers influence the size of their child's head—and, as a result, brain size and future ...

A new study has examined just how mothers influence the size of their child's head – and as a result, its brain size and future IQ – during the first ...

A new landmark study has uncovered evidence that challenges the long-held beliefs about human evolution.