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 ...

Argentina's Sarandí Canal turned red after what locals believe was a toxic spill from one of the neighborhood's industrial ...

Now, you're never really going to get to a really realistic blood red with just red food color, so what we do is we add a little blue, or black, and then that gives us a little depth. So now you ...