The biomagnetism connected with geomagnetism is a navigation system which was found in the bees, butterflies, salmons, birds and even fruit flies. The core of our planet was considered to be an outer liquid core and a solid inner core. The outer liquid core build up the geomagnetism which protect our planet from the damage of the solar radiation. Besides, it also drives the inner solid core to rotate. Recently, the scientists found that not only did the rotation of the inner core stop, but also may move in the counter direction.
We may love our planet more by understanding it more.