A fetus develops fingerprints at eighteen weeks!
32
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
About 400 different kinds of microbes live on and in the human body.
-3
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
If your stomach didn't produce a new layer of mucous every two weeks, it would digest itself.
33
More people have a phobia of frogs than rats.
41
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23