In a way, your spine is the keystone that holds your body together. Since it has so many important jobs, it has to develop in exactly the right way. How does this happen? See more »

Ever wondered how your stomach acid knows the difference between your stomach and the food inside it? See more »

Dying is one thing we all have in common. Our bodies weren't built to last, and you can't trick the Grim Reaper out of coming to call. So what are we in for at the end of life? See more »

Think the "hair of the dog that bit you" is your road to salvation? Think again! There is some complicated chemistry going on in the body when you overimbibe. See more »

Ears are truly extraordinary organs and hearing is a fascinating process. Ears pick up all the sounds around you and then translate this information into a form your brain can understand. See more »

Muscles are one of those things that most of us take completely for granted, but they're the body's engine. Without our muscles, we couldn't walk or talk -- and our blood would stop flowing. See more »

You touch a hot object and immediately drop it. It happens so quickly you don't even think about it. How does this happen? Your nervous system coordinated everything. See more »

Learn about the social phenomenon of shaving and the evolution of shaving technology. See more »

Smell is a basic sense, but scientists are still exploring how it works. Why are researchers, developers and even government agencies so curious about smell? What makes a seemingly simple sense so tantalizing? See more »

Taste might seem like the simplest sense. But we know much less about taste than we do about sight and hearing. Why is taste so mysterious? And what on earth is umami? See more »