Why do humans have an appendix? New research is reshaping our understanding of this overlooked organ and its antiquated role ...

It was the first day of spring break in 1992 in Phoenix, Ariz. 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 ...

The appendix has independently evolved at least 32 times across 361 mammalian species. What makes it an evolutionary darling ...

For skeptics of evolution, vestigial organs are pretty difficult to explain. The human body has inherited numerous adaptations from our ancient ancestors that no longer serve a purpose in our modern ...