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Heat lost through the head

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.




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Longest cells in the human body

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.

Longer runway on higher altitudes

Airports that are at higher altitudes require a longer airstrip due to lower air density.

Cesium atom in an atomic clock

A cesium atom in an atomic clock beats over nine billion times a second.

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