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.
You may never have thought about it (unless your child asks), but boogers are sticky for a perfectly logical scientific reason.
You breath all day, every day. How much oxygen does this process consume?
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.
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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