It was the first day of spring break in 1992 in Phoenix, and 12-year-old Heather Smith was excited for her family's upcoming ski trip. But before Smith and her family had even packed their snow pants, ...

As humans have evolved, some anatomical parts with functional roles in the body have become unfunctional and are often referred to as vestigial organs or structures. Some are believed to be a ...

The appendix is a small organ situated between the small and large intestines. For a long time, scientists didn't know its function and deemed it useless. In fact, it was seen as potentially dangerous ...

Many Americans grew up with the idea their appendix is an unnecessary organ, made obsolete by evolution. But in the last 20 years or so, scientists have come to believe the appendix serves a purpose, ...