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Scientists have the world's fastest ant. It is the Saharan silver ant. It at a speed of just over 3kph, but that the same ant speed as a human running 580kph. The ant runs 108 times the length of its own body every second. This is quicker than an Olympic 100-meter runner. The world's fastest man, Usain Bolt, the 100 meters using 4 strides a second. The Saharan silver ant up to 50 strides a second. The scientists this much movement almost the limits of what is physically possible for a living thing. Each of the ants' feet contact with the ground for a very short time. The ants' feet the ground for just seven milliseconds before they the next stride.

The scientists said the Saharan silver ant runs so fast because it in the hot desert. The sand can temperatures of up to 60 degrees Celsius, so the ant wants to as little time as possible with its feet on the scorching ground. Another reason that if the ants' feet spend a longer time on the sand, they will a little and the ant down. Professor Harald Wolf wrote about why the ants' feet so fast. He said: "These features may be related to the sand dune habitat. They could the ants' feet from sinking too deeply into the soft sand." Professor Wolf told CNN: "We knew these ants would be fast, but nobody how fast exactly, and how they would that speed."

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