What happens in our body that make our veins look blue, although they are full of red blood? Follow Tech Insider: On Facebook Following is a transcript of the video: If our blood is red, then why ...

Human populations that left Africa evolved quickly whereas Neanderthals stayed the same, according to an analysis of blood ...

Researchers are still trying to figure out why there are so many, but these different blood types can have deadly downsides. The surface of our red blood cells have proteins, called antigens ...

For example: There are also Rhesus (Rh) antigens, which determine if blood is "positive" or "negative." If you have Rh proteins on the surface of your red blood cells, you are Rh positive.

The moon is expected to turn an eerie blood-red above the skies of the U.S. in ... casting a shadow across our planet, a lunar eclipse involves the Earth passing directly between the moon and ...