Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
In one day, adult lungs move about 10,000 litres of air.
11
Only humans shed emotional tears.
331
We share 70% of our DNA with a slug.
218
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The human body contains over a billion miles of DNA.
147