How useful are the well-known and hotly contested categories of “male brain” and “female brain”? Among experts, nobody really questions that anatomical sex differences in the brain exist. But since the advent of brain science, the scientific community has been divided over how many differences there are, which ones have…
Humans are animals that have backbones. This means we’re in a group called “vertebrates” – along with fish, amphibians (such as frogs), reptiles, birds and mammals. A long time ago, humans weren’t around. We actually came from 500-million-year-old fish that had no arms, legs or jaws. But slowly, from one…
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