A blood moon occurs during a total lunar eclipse when Earth's shadow casts a reddish tint on the moon. This intriguing visual ...

Humans and mice exposed to long-wavelength red light had lower rates of blood clots that can cause heart attacks, lung damage and strokes, according to research led by surgeon-scientists.

Scientists have long connected light exposure to health outcomes. The rising and setting of the sun underlies metabolism, hormone secretion, even the flow of blood, and heart attacks and stroke ...