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The European robin's magnetic compass works only with light, only in the right-eye, and only when oriented within a narrow band of intensities. The reason for these constraints points at a chemical mechanism that uses quantum-mechanical superposition to read the Earth's magnetic field.
In 1995, divers off Japan's Amami Islands began noticing perfectly geometric circles two meters across on the seabed. The structures were intricate, symmetric, and clearly built — but no one knew what was making them. The answer turned out to be a five-inch fish performing a week-long cons...
Heterocephalus glaber breaks almost every rule mammalian biology is supposed to follow. It lives 30 years on a 10-year body plan, almost never gets cancer, feels no pain from acid or capsaicin, tolerates oxygen levels that would kill most mammals, and runs a eusocial colony like an insect....
Octopuses, squid, and cuttlefish edit roughly 60% of their RNA transcripts in their nervous systems, compared to less than 1% in humans. The mechanism is now reasonably well understood, and what it implies about how these animals think is unsettling.
Plants do not have nervous systems and yet they sense, integrate, and respond to a wide range of environmental signals with surprising sophistication. The mechanisms — calcium signaling, electrical waves, chemical messengers, and slow growth-based responses — solve problems that animals so...
A creosote bush in the Mojave Desert may go six months without rain. Some have lived for thousands of years. The strategies that desert plants have evolved are not a single trick but a portfolio of solutions to the same fundamental problem, and the diversity of those solutions is one of th
Cut off a salamander's leg and it grows a new one. Cut off another and it grows a third. The animal will replace eyes, jaws, sections of heart, and parts of brain with anatomical accuracy. No mammal does this. The mechanism is not a single molecule but a developmental program that adult sa
A loggerhead hatchling that scrambles down a Florida beach in August will spend the next seven to twelve years circling the entire North Atlantic — past the Azores, around the gyre, and back to within a few kilometers of where she was born. She does this without parental instruction, witho
A gecko can hang from a polished glass ceiling by a single toe. The mechanism is not suction, glue, friction, or static electricity. It is van der Waals forces multiplied across a hierarchy of structures so fine that one toe pad has more contact points than there are people on Earth.
In a few species of Southeast Asian and American firefly, thousands of insects flash in perfect unison, their rhythms aligned to within milliseconds. The mechanism, worked out over half a century of research, is one of the cleanest examples of decentralized coordination in biology.
A common pipistrelle bat weighs five grams and hunts mosquitoes in the dark. It launches itself from a roost beam at dusk, flies a complex aerial pattern through
The European eel, Anguilla anguilla, is a fish that lives most of its life in fresh water — in rivers, streams, and lakes from Norway to North Africa, from