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 ...

Over the past two decades, some studies have suggested that human brains are shrinking. But there is also evidence that IQ scores have risen over the past century. But is it possible for us to get ...

Some researchers argue that the average human brain began shrinking 3,000 to 10,000 years ago, long before smartphones, ...

Modern humans are evolutionary survivors, thriving generation after generation while our ancient relatives died out. Now, new research into our brain chemistry suggests that an enzyme unique to Homo ...