Many parts of your body are proof of evolution. Specifically, the fact we're growing out of them or straight up don't need them anymore. The appendix is a perfect example. It used to be used to digest cellulose when the human diet consisted more of plant matter than animal protein. Now, it lays mostly dormant.
This soon-to-be-extinct part of us is even more evidence of evolution. Our nearest genetic cousins, the chimpanzees, have an extra set of ribs. Most humans have only 12, but approximately eight percent of us still have an extra one.
It's hard to imagine humans not having tail-bones, but it looks like we're heading in that direction. It's called a tail-bone because it's where a tail would go. They're used for balance and communication in mammals, but we found other ways to fulfill those needs.
This evolutionary trait may be left over from the age of reptiles. This is a cervical bone that appears in less than one percent of the population. Some only have it on one side. It can often lead to artery and nerve problems.
When you hear people say every body is different, they mean it. This is yet another body part not all of us have. It is a small muscle, stretching under the shoulder from the first rib to the collarbone. It's useful if we walked on all fours, but most of us don't do that much these days.
This is the fancy name for the muscles that give you goosebumps. These muscles were used to puff up our fur for insulation or to intimidate others. We no longer have much fur, so we may soon no longer have goosebumps. Sorry, R.L. Stine.
Why do men have nipples? Because in the early stages of fetal development we are sexless. Thus, nipples show up in both genders. But since males can't produce milk from their nipples, they may slowly drift away. Free the nipple from existence, if you will.
Eyebrows keep sweat out of our eyes. Male facial hair apparently can attract a mate. All other hair? No longer serves a purpose. Looking forward to receiving fewer waxings over the next couple hundred years.
These little piggies went all the way to extinction. We used to rely on our toes for balance, but studies show we're leaning more inwards for balance these days. If this keeps up, we won't have much use for toenail clippers anymore.
It's only appropriate an evolutionary trait is named after the man most synonymous with the theory. This fold at the top of some people's ears may be a remnant of a larger shape that was used to focus on distant sounds. We no longer need that, as we tend to hear most of our sounds through ear buds these days.
Most of us have this long, narrow muscle that runs from our elbow to our wrist. But it's actually now missing in 11 percent of humans. It was important for when we needed to climb and hang more often, but that's going out of style. If you're the athletic type, better use it before you lose it.
Sad about all the parts we're losing? Some you'll be glad to be rid of. These annoying mucus-lined cavities serve no presently-known function and frankly, our quality of life will be better when they're eventually gone.
Good riddance. We used to need these for chewing tougher plant life, now they're just a hassle. They're so useless you can't even sell them on the Black Market, and you can sell almost any body part there.