Biologists think that humans are the only animals who cry emotional tears.

Biologists think that humans are the only animals who cry emotional

More from the Human Body Facts niche...

Human Body Facts

To protect our eyes they are positioned in a hollowed eye socket, while

Human Body Facts

Your eyeball weighs around 30 grams

Human Body Facts

The pressure created by your heart can squirt blood almost ten metres

Human Body Facts

When you blush, the lining inside your stomach also blushes!

Human Body Facts

Even if no one in the past few generations of your family had blue or

Human Body Facts

The human eye can function at 100% at any given moment, without needing