A small insect-eating animal is the common ancestor of whales, elephants, dogs, and humans.
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A maturing mouse gut nervous system (shown in orange), a mesh-like system of neurons that regulates digestion and gastrointenstial function, runs from the stomach through the intestines.
A handful of species have learned how to survive in freezing climates. To do so, the animals must counteract the damaging effects of ice crystal formation, or keep from freezing altogether. Here are a few ways they do it.
Animals and plants come in a dizzying array of colors. Current research is cracking into the remarkable structures behind nature's artistic display.
Tracking the genetic diversity and evolution of rhinoviruses can lead to a better understanding of viral evolution, the common cold, and more dangerous infections.
Researchers are working to understand how often-colorless biological nanostructures give rise to some of the most spectacular technicolor displays in nature.
Why scientists are so near and yet so far from being able to cryopreserve organs
As wolves became domesticated, their genes adapted to a starch-rich diet of human leftovers.
Bamboo sharks still developing in their egg cases respond to a predator presence by ceasing movement and even breathing.
Wrinkled skin on our fingers after long soaks in water may have made human ancestors more dexterous with aquatic tasks.
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