A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
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
Tigers can see 6 times better at night than humans.
305
You forget 90% of your dreams.
256
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21