On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
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
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Early American humans hunted car-size armadillos and used their shells for houses.
12
Your fingernails grow faster in summer.
744
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23