Exposure to sulfur-rich volcanic soil may increase production of pheomelanin, a pigment that gives a reddish tint to the feathers of barn owls living on remote volcanic islands Barn owls (Tyto alba) ...

Life on a volcanic isle appears to give barn owls a blush of red-brown plumage. The high-sulfur environment on such islands influences the birds’ coloration, researchers report March 13 in the Journal ...

Nasa's Mars rover has made its "most unexpected" discovery since it landed on the red planet in 2012: rocks made of sulphur. On 30 May, the Curiosity rover "happened to drive over a rock and crack it ...