Human Body

The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.


From killer sausages to canceling crows' feet, botulinum toxin has come a long way. Botoxwurst, anyone?

Is this you? This is totally you. Why do some people burst into violent sneezing fits when they encounter bright sunlight? Check your genetics.

Careful with that chopping knife! If you lose a fingertip, it's probably gone forever. With kids, however, that's not always the case. Why is that?

Maybe if you look at it with only one eye -- in the dark.

Opioids can make your insides skid to a slow crawl. That's a problem when you consider nearly 250 million opioid prescriptions were written in 2013 by CDC estimates.

You always wanted to eat electricity right? Now you can, and it might even provide a health benefit.

And it's not because of all that screen time.

Selfish humans act in our own self interest, but when it comes to cotton buds and ears we do exactly what science says not to. And yes, your doctor can tell.

We dig into the science and history of those delightful respiratory explosions we call sneezes, including one that's copyrighted.

Currently, all organs in the U.S. are donated. A report says paying $45,000 per kidney donation would end waiting lists and save taxpayer dollars.

Scientists discover that using a feed additive can decrease cow burps by 30 percent, vastly reducing greenhouse gas.

Does vocal fry signal the most annoying end of times? Or is it just part of a natural language progression?

Think your peepers are passé? Some cutting-edge cosmetic procedures can take your brown eyes to bright blue — with a few inherent risks.

Poetry is full of references to salty and bitter tears, but there's not much about bloody tears. Besides movie villains who weep blood, is this phenomenon real?

Tired of standing on tiptoes when you pose for a photo with friends? If you're an adult looking to add a few inches to your frame, you might be out of luck.

The human tongue is essential for speaking and eating ice cream. Ever worry about swallowing yours? We can put that concern to bed.

In some settings, you just can't heave a giant sneeze. If you hold back during a meeting or date, you're exhibiting decorum. Could you also be making a death wish?

There's nothing worse than biting your tongue. Unless it swells up and gets infected — thankfully it's pretty rare. See why.

It's hard to imagine being thankful for mucus when you've got a nose full of it, but if it all went away you'd really be in trouble.

Smelling fecal matter is gross enough, so the possibility that tiny bits of poop are actually getting into your nose is outright disgusting.

Earwax might seem like just another gross bodily substance, but it serves a very important function in the health of your ear canal.

Tiny little babies are so sweet and cuddly. That is until you have to change their poopy diaper. What in the world is it that makes their poop so foul?

Boogers are more than an annoyance. Your body makes them for a very specific purpose — and it's not to gross out other people.

We all pass gas, but not all of us like to talk about it — or study it to figure out how quickly it travels out of the body.

As you're wiping away the crust from your eyes in the morning, do you ever ponder why it forms in the first place?