Materials Science

World's Dirtiest Man

  • Curiosity Videos

    Curiosity Videos: World's Dirtiest Man

    We shower, we bathe, we apply perfumes and deodorants. We’re cleaner and healthier than at any other point in human history. So it may be surprising to learn there are 10 times more things living on you than cells in your body. From the flora of our guts to the fauna on our skin and hair, this episode explores the wildlife park that is the human body in stunning, microscopic detail – combining the creativity of natural history filmmaking with the charisma of Discovery’s very own Mike Rowe.

  • Things That Can Make Your Skin Crawl

    10 Things That Can Really Make Your Skin Crawl

    As disturbing as this may sound to someone with disinfecting wipes in their pockets, the normal human epidermis doubles as a complex ecosystem as vibrant as the Amazon rainforest. What's crawling on your skin?

  • Pictures of Parasites and More

    The Good, the Bad and the Simply Irritating: Pictures of Parasites and More

    Creepy-crawlies like roaches and spiders might make you cringe, but there are more tiny bugs and bacteria around than you might realize -- and many take up residence right on your body and bedclothes.

  • Take the parasite quiz!

    What makes our skin crawl? Take the parasite quiz!

    Like it or not, more than a trillion other creatures share your skin with you. How much do you know about the menagerie of organisms humans host?

  • Curiosity Videos
  • Things That Can Make Your Skin Crawl
  • Pictures of Parasites and More
  • Take the parasite quiz!

Explore This Topic

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What's living on you? Take the microorganisms quiz!

Your body really is a wonderland -- and an ecosystem all its own. You play host to all sorts of microorganisms that you can't see. See if you know what's on your hands, in your hair, and thriving everywhere else on you.

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Curiosity Videos: World's Dirtiest Man

We shower, we bathe, we apply perfumes and deodorants. We’re cleaner and healthier than at any other point in human history. So it may be surprising to learn there are 10 times more things living on you than cells in your body.

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10 Most Important Insects in the World

Insects outnumber us and they may be creepy and crawly. But they're also sadly under appreciated. You'd be surprised to learn what crucial jobs bugs to every day (and night) to keep our planet going strong.

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10 Reasons to Like Bacteria

That's right -- like them. After all, these are the ubiquitous, wonderful microorganisms that give us cheese and, by extension, leisure activities like cheese rolling. Need we say more?

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Are insects key to our survival? Take this insects and biodiversity quiz!

Did you ever play in the dirt as a child and dig up insects? Insects and biodiversity affect us every day. This quiz will help test your knowledge of why and how insects and biodiversity are interconnected.

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Insect Pictures

Did you know that insects make up approximately 80 percent of the total number of animals on earth? Check out our pictures of insects to find a wide array of specimens, including dragonflies, army ants, butterflies and more.

Previously on Curiosity

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Can you live forever?

What would it be like to be immortal? It's the year 2967 and Adam Savage is 1,000 years old. He reflects on his long life revealing how science in the 21st century transformed his body, creating a supercharged cyber-human, allowing him to live forever.

Quiz

Do you know how to capture wildlife in their natural habitat? Take the photography quiz!

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Want to capture wildlife in their natural habitat on your camera? To do so, you either need luck or skill (or maybe a bit of both). Take our quiz to learn more about what equipment you'll need to master the art of wildlife photography.