Gross Body Science

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Have you ever crashed your bike and torn up your knee? Or have you been hit in the face by a ball and gotten a big shiny bruise around your eye? Have any of your scabs ever oozed with gross-looking pus? Blood, bruises, and scabs are all part of your...

From snot and phlegm to earwax and eye gunk, there’s some pretty gross stuff in that body of yours! But why do you have all that sticky slime inside you? And why does it build up sometimes and make you feel so rotten? Learn all about the nasty stuff...

Your mouth really is filthy! It’s a saliva bath for millions of tiny little creatures that share your food, chew holes in your teeth, and make your breath smell like a garbage truck. From cavities to canker sores, those little creatures can also...

Have an itch? Let’s zoom in for a closer look at what’s causing it. It could be one of many nasty things. How about bacteria poop? (It happens, and it stinks!) It might be a tiny critter that lives on people like a skin mite, louse, chigger, or other...

What’s that funny feeling coming from your gut? It could be oozing stomach acid or a booming belch or stinky fart that is ready to burst. These revolting reactions happen during the digestion of food. Once you’ve mashed up and swallowed a meal, your...