Why Humans Are So Smart—And So Stressed Out
Homo sapiens evolved big brains not so that we could make tools but so that we could keep track of 150 friends and competitors.
Why Humans Are So Smart—And So Stressed Out
Mind
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The Perils and Privileges of an Amazonian Hallucinogen
Tourism based on consumption of the plant brew known as ayahuasca is booming, for better and for worse.
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Schizophrenia’s Tangled Roots
As an increasingly complex picture of schizophrenia emerges, researchers are recognizing that a more individualized and humane approach is needed to better understand and treat the condition.
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How Smart Were the First Toolmakers?
State-of-the-art brain imaging technology is shedding new light on the evolution of human intelligence.
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How Do You Count Without Numbers?
Some human societies lack words for numbers. What does this say about the rest of us—and human evolution?
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What Role Did Autism Play in Human Evolution?
Traits we often tend to disparage were—and arguably still are—critical to human communities.