Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Your heart will pump about 212 million liters in its lifetime.
26
One human hair can support 3 ounces.
191
It takes approximately 12 hours for food to entirely digest.
93
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
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 body contains over a billion miles of DNA.
147
The world's shortest man measures only 21.5 inches.
73