Study finds that protein puts the brakes on melanin

A year and a half ago, researchers at Brown University found a molecular gas pedal for melanin production. Now they've found a brake. For scientists, the finding deepens not only the basic understanding of how eyes, skin ...

Fungal spores could 'hijack' human immune cells to spread infection

Scientists have announced a major breakthrough in their understanding of how the fungus Aspergillus terreus - the cause of serious illness in humans - can move around the body, rather than remaining in the lungs as with similar ...

A fossilized snake shows its true colors

Ten million years ago, a green and black snake lay coiled in the Spanish undergrowth. Once, paleontologists would have been limited to the knowledge they could glean from its colorless fossil remains, but now they know what ...

Pigments, organelles persist in fossil feathers

A study provides multiple lines of new evidence that pigments and the microbodies that produce them can remain evident in a dinosaur fossil. In the journal Scientific Reports, an international team of paleontologists correlates ...

Painting by numbers

Individuals of a particular species generally differ from one another. We are clearly most adept at recognizing members of our own species, although dog and cat owners will be ready to confirm that their pets look unique. ...

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