Human Body

The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.

Topics to Explore

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Why are boogers sticky?

You may never have thought about it (unless your child asks), but boogers are sticky for a perfectly logical scientific reason.

How much oxygen does a person consume in a day?

You breath all day, every day. How much oxygen does this process consume?

How Your Heart Works

The heart is a vital organ that basically serves as a pump. Learn about heart chambers and valves, blood flow, the heart's electrical system and blood supply. Read more about how this amazing organ works.

How Your Immune System Works

There are millions of bacteria, microbes, viruses, toxins and parasites that want to invade your body. And they'd happily do it, too -- if it weren't for your immune system.


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