A series of short films for secondary schools examining the human body through spectacular graphics based on the latest science and stories of remarkable people around the world. This series gives an ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The circulatory system consists of three independent systems that work together: the heart ...

For nine months, you were enveloped in the warm, comfortable world of your mother's womb. Your every need was taken care of. The placenta supplied you with oxygen from your mother's blood, so your own ...