NEW YORK (AP) — A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing ...

Anemia, a condition marked by low levels of hemoglobin in the blood, affects nearly 2 billion people worldwide.

Researchers have uncovered the 3D structure of RBP3, a key protein in vision, revealing how it transports retinoids and fatty ...

Using an experimental technique called "Oz," researchers stimulated the human retina such that people saw a brand-new color.