Mental Floss

THE BODY

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Scratching makes it worse.

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They're tiny but mighty.

Colorized scanning electron micrograph of E. coli, a common gut bacteria

Your gut has millions of neurons. And that's just one of its intelligent features.

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The answer depends on whom you ask.

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The ins and outs.

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They call it the "practice" of medicine for a reason.

Chloe Effron

It is possible for urine to be different colors. But yellow pee is a sign that your body is healthy.

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They’re more common than ever.

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This is the science of it, step by step.

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It's that little organ you may have forgotten about.

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Check yourself before you wreck yourself.

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They're more than just a place to dab polish.

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Wasn't this an episode of 'Black Mirror'?

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It has a function after all.

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Don't worry—it's perfectly normal.

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One of life's most pressing questions, explained.

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They call it the interstitium.

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It's your body's largest organ.

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Our bodies contain up to 100,000 miles of blood vessels.

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Sure, it's a titillating subject—but it's also a pretty versatile body part.

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This self-soothing behavior is actually a pretty effective technique for temporarily calming pain signals to the brain. Here's how it works.

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It's the thinnest part of the skull … which is why Maori warriors crafted a special weapon to crush it.

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Its developers hope it sparks the next generation of total artificial hearts.

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The pelvis is not actually a single body part, but a term that refers to a collection of bones, muscles and organs below the waist.