most of us rarely think about the earth's magnetic field. We might know that it helps guide birds as they travel and keeps our compasses pointing north. But, the magnetic field is much more. It is one of the main components that make life on the planet possible.However, the processes in the Earth’s core that create the magnetic field are poorly understood. Now, scientists at the University of Maryland are working to reproduce the conditions that lie 3,000 kilometers below our feet.Deep inside Earth is a 3,400 kilometer-wide ball of liquid metals -- iron and nickel. In the center is a smaller ball of solid iron. They combine to form what is called Earth’s core. The core creates the electric currents responsible for Earth’s magnetic field. The most immediate benefit is its part in navigation.
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