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In particular they have wondered how apparently random group of elephants, sometimes separated by miles, can manage to move in a cohesive, coordinated manner toward the same destination…Today researchers have discovered that the elephants are communicating- by using sounds at such a low frequency that the human ear is incapable of detecting them.

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It is true that the bamboo is the tallest grass. It grows to a height of about 35 meters and has a thickness of about 30 cm. bamboos grow at a great spread. They can grow about 40 cm, in a day. One bamboo was known to have grown 90 cm, in just one day.