Vestigial structures take many forms: organs, behaviors, and even biochemical processes. Their defining characteristic is they are structures that a species has retained, but no longer serve their ...

The appendix is a very small finger-like tissue attached to the beginning of the large intestine, in the lower right side of the abdomen. It is popularly known as a vestigial organ, as in one which ...

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 ...

Long denigrated as vestigial or useless, the appendix now appears to have a reason to be – as a “safe house” for the beneficial bacteria living in the human gut. Drawing upon a series of observations ...

New research shows the appendix isn't as unnecessary as previously though. In fact, an entire group of innate lymphoid cells (ILCs) are recruited to protect the appendix. Scientists from Melbourne's ...

The human appendix, a narrow pouch that projects off the cecum in the digestive system, has a notorious reputation for its tendency to become inflamed (appendicitis), often resulting in surgical ...

Why do many people have hair on their big toe? Why do you have a tailbone? And what about wisdom teeth? There are many parts of our body that have become useless to humans but were not always useless.

For more than a century, the human appendix has been written off as a biological relic, a shrunken leftover from plant-eating ancestors that serves no real purpose. That view is now outdated. A ...

The body is a glorious thing. Humans have evolved to have straight fingers rather than curved, pelvises designed to support upright walking and brains that have tripled in bulk. But evolution also has ...

People have speculated over the nature of seemingly useless physical characteristics in living things for thousands of years. It wasn't until the late 18th and early 19th centuries, though, that the ...

You may have heard that astronauts have their appendix removed before leaving Earth. After all, people say you can live without this organ because it serves no purpose, but how much truth is there in ...