The odd mechanics of living things, by Maren.
Sorted newest first.
Tardigrades can survive temperatures from -272C to 150C, pressures from vacuum to 600 megapascals, and doses of radiation that would kill a human a thousand times over. The mechanism is not a single trick but a coordinated cellular shutdown that reorganizes the entire cell to a glass-like state.
The mirror self-recognition test was supposed to mark a cognitive boundary between great apes and the rest of vertebrates. A 2019 paper showing cleaner wrasses passing it complicates the boundary in ways the field is still working through.
Dragonflies catch their prey on roughly 95 percent of attempts, which is one of the highest hunting success rates documented in any predator. The mechanism turns out to depend on a small set of specialized neurons doing predictive interception with computation that anticipates the prey's motion.
The barn owl can locate a mouse moving under leaf litter with eyes closed by ear alone. The mechanism is a strange auditory map built on asymmetry between the two ears and a brainstem circuit that exists in no other animal at the same resolution.
The platypus is more than a taxonomic curiosity. Its bill is a high-resolution electroreceptive sensor that detects the electrical fields of prey muscles through muddy water, and the only mammal lineage with this sense.
The schoolroom story of chameleon color change is mostly wrong. The actual mechanism, finally pinned down by physicists in 2015, is a tunable photonic crystal in the skin: chameleons change color by stretching nanoscale crystal lattices, not by moving pigment.
In some deep-sea anglerfish, the male permanently fuses to the female's body, shares her circulatory system, and degenerates into a sperm-producing appendage. The biology is even stranger than the schoolroom version suggests.
The pistol shrimp produces one of the loudest sounds in the ocean from a snap of its claw, generating temperatures briefly approaching the surface of the sun and shock waves that stun fish meters away. The mechanism is cavitation, and the small invertebrate did the engineering 100 million years
A leafcutter ant colony of Atta or Acromyrmex can contain 8 million workers organized into a strict caste system with millimeter-scale minor workers, centimeter-scale soldiers, and a single
A plant in autumn must somehow know it is autumn. The signal it uses is daylength: most temperate plants are short-day species that flower as days shorten, or
A small group of marine sea slugs eats algae, digests most of it, but extracts the chloroplasts and stitches them into their own cells, where the chloroplasts continue photosynthesizing for months. The mechanism keeps producing surprises because the standard story of how organelles work ca
Planning for the future was long thought to be a uniquely human cognitive ability, requiring symbolic language and abstract reasoning. Then a series of careful experiments showed that ravens can do it, and that the cognitive infrastructure for time travel is older and more widespread than