The Lungs and Breathing

2 cards. Each one is a 40-second story with a five-minute read behind it.

1. The fastest known example of human evolution occurred in just 3,000 yearsWhile most evolutionary changes take millennia, certain human populations adapted to the thin air of high altitudes with startling speed. By decoding their DNA, scientists have id…
2. The muscle that defies geometry to power your breathMost skeletal muscles are limited by their shape, but the human diaphragm operates on a different set of rules. By prioritizing force-length behavior over simple geometric predict…

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