The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
It takes about 20 seconds for a red blood cell to circle the whole body.
102
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18