The retina of the human eye contains six to seven million cone cells. These cells contain light-sensitive proteins known as cone opsins. They enable us to perceive our surroundings in detail in ...

The colors in a flower patch appear completely different to a bear, a honeybee, a butterfly and humans. The ability to see these colors is generated by specific properties of opsins—light-sensitive ...

(PhysOrg.com) -- Scientists have detailed the active form of a protein which they hope will enhance our understanding of the molecular mechanisms of vision, and advance drug design. Writing in the ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Gaze deep into any animal eye and you will ...