The Body

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

They’re more common than ever.

This is the science of it, step by step.

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

Check yourself before you wreck yourself.

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

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

It has a function after all.

Don't worry—it's perfectly normal.

One of life's most pressing questions, explained.

They call it the interstitium.

It's your body's largest organ.

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

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

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

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

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

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.

This mysterious little body part is a surprising source of controversy among researchers.

2. Hot testicles can cause health and fertility problems.

Smoking can cause breasts to droop, but breastfeeding doesn't.

Though you might not often think about them, lymph nodes are crucial for your immune system.

At its largest point, the sciatic nerve is about as big around as a man's thumb—plenty big enough to be an important part of the nervous system.

Let's go for the jugular.