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 ...

Biologists say the appendix isn’t useless after all. Evolution kept reinventing it, and it may help support gut immunity and ...