The human brain uses approximately as much energy as a 10 watt light bulb.
120
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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 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
The human brain doesn't stop developing until about 25 years old.
102
Mushrooms are more closely related to humans than they are to plants.
47
Your fingernails grow faster in summer.
744