When most of us hear birds chirping, we may assume it’s just simple background noise. However, a new study from the University of California, Berkeley, suggests that at least one small songbird is ...

A pigment that makes feathers and hair orange helps prevent cellular damage by removing excess cysteine from cells.

Orange pigment may limit cellular damage by managing sulfur-rich nutrients, shedding light on why orange coloration persists ...

A pigment that makes feathers and hair orange helps prevent cellular damage by removing excess cysteine from cells. Pheomelanin is an orange-to-red pigment that is built with the amino acid cysteine ...