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

Don't be fooled, your blood is always red ... Skin around the vein looks more red than the vein itself. So, the color contrast enhances the veins' bluish hue. More from Video ...

The color of menstrual blood is a key indicator of women's health, and while bright red is the most common, it's not the only one. Menstrual blood can range from dark red to brown, black ...

The moon, about as large as it can be in the sky, will turn a blood red color in the hours before dawn. The celestial event is a lunar trifecta: a supermoon (a moon at perigee, the closest to ...