A new study suggests that never-seen-before stem cells in the human retina can restore vision in mice with a common eye disorder. But more work is needed to translate the treatment to people.

Scientists have put a face, but not an official name, to the earliest human ancestor ever found in Western Europe. This recently discovered hominin is a "new actor in the story of human evolution," ...

The image artistically depicts the human circulatory system in great detail. In the photograph, blood vessels and associated organs are shown in red on a light green background. However ...