Tunisia's desert ants-mathematical wizards

Tunisia often blows sea breeze, and there is no rock to provide visual signs for ants, but the animals are peculiar, and they will "integrate their paths".

According to ant navigation researchers Martin Muller and Rudiger Weiner, desert ants "can constantly calculate the trajectory from their current position to their previous position. According to this calculation result, they will not' go back' when they return, but connect a straight line between the scene and the starting point. "

It's incredible! How is this achieved? It turns out that ants here have the habit of observing the sun and determine their direction by calculating the angle of their path relative to the position of the sun. These calculations of ants are all done in a nervous system composed of only 250,000 neurons, while the human nervous system has almost 85 billion neurons!