There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
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
One human hair can support 3 ounces.
191
The human eye blinks an average of 4,200,000 times a year.
233
Your heart will pump about 212 million liters in its lifetime.
26
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The average person's skin weighs twice as much as their brain.
131
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15