Learn why we need vitamin D to manage symptoms of Seasonal Affective Disorder, and why more research is needed.

Learn more about the water molecules on the moon, which may trace their origins to the materials that made Earth and comets.

Discover the species that range from a blob-nosed fish to a snake named after Leonardo DiCaprio.

Learn how two studies from Denmark expand upon earlier U.S. work that first linked the medication with the eye disease.