Add Yahoo as a preferred source to see more of our stories on Google. You may have heard that astronauts have their appendix removed before leaving Earth. After all, people say you can live without ...

The appendix is a small tube-like organ attached to the end of the large intestine, near where the small intestine meets it. Modern research suggests it plays a role in intestinal health and immune ...

Nobody's really sure why we humans have an appendix, and some biology textbooks still refer to the pinkie-size organ, located near the juncture of the large and small intestine, as a "vestigial organ.