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Biology
Plain-language explainers about biology, written to make useful context easier to find and understand.
Browse articles that connect biology to technology, health, infrastructure, money, science, and everyday decisions.
Apr 2026Mar 2026
Humans Are Built to Run Long Distances. Almost No Other Primate Is.
Running a marathon is genuinely one of the things human bodies are best at, relative to other species. Here's the evolutionary biology of why.
Why Do We Yawn? Scientists Have Been Wrong About This for a Long Time.
The low-oxygen explanation for yawning was taught for decades and is almost certainly false. The current best hypothesis involves brain temperature. Here's the evidence trail.