Night blindness is caused by vitamin A deficiency, congenital mutations, and other eye diseases. Learn about symptoms, causes ...

Astronomers have uncovered a vast cloud of energetic particles—a "mini halo"—surrounding one of the most distant galaxy ...

This is not an itinerary for those looking to do serious surfing, windsurfing, or foiling. This itinerary will not take you ...

The earliest light in the universe has been traveling across space since just after the Big Bang. Known as the cosmic ...