A row has erupted nearly a month after scientists claimed that the ancient human species Homo naledi displayed sophisticated behaviour, despite having much smaller brains than us, the Homo sapiens.

Furor in scientific community over claims that small-brained early humans were intelligent

After conducting an analysis of cranial fossils, scientists have identified the reason behind the shrinking of the human brain 3,000 years ago. The study, published in the journal Frontiers in Ecology and Evolution, shows that our ancestors had brains that were larger than our own.

Scientists identify reason behind shrinking of brain 3,000 years ago

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Furor in scientific community over claims that small-brained early humans were intelligent

Scientists identify reason behind shrinking of brain 3,000 years ago