When we think about menstruation, the first thing that usually comes to mind is humans. Some animals have menstruation [Fruugo] When we think about menstruation, the first thing that usually comes to ...

This archival footage from the 1930s offers an in-depth exploration of plant and aquatic life cycles, focusing on the processes of reproduction and growth at a microscopic level. The film begins with ...

Whether it's our bloodstream, brain, or lungs, microscopic fragments of plastic seem to turn up every time scientists scour a new corner of the human body. The male reproductive organs are no ...