What guppy guts can teach us about evolution

On the list of scientific tools that help us understand health, evolution or the environment, the Trinidadian guppy doesn't often come to mind.

Fossil dental exams reveal how tusks first evolved

A wide variety of animals have tusks, from elephants and walruses to five-pound, guinea pig-looking critters called hyraxes. But one thing tusked animals have in common is that they're all mammals—there are no known fish, ...

Genetically altered daddy longlegs have short legs

A team of researchers from the University of Wisconsin, the Smithsonian Institution's National Museum of Natural History, and Western Connecticut State University, has assembled the first draft genome of Phalangium opilio—the ...

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