The longest cells in the human body are the motor neurons. They can be up to 4.5 feet (1.37 meters) long and run from the lower spinal cord to the big toe.
Heat lost through the head
40 to 50 percent of body heat can be lost through the head (no hat) as a result of its extensive circulatory network.
More Science Facts
Airports that are at higher altitudes require a longer airstrip due to lower air density.
A cesium atom in an atomic clock beats over nine billion times a second.