Youtor
Understanding Earth’s Magnetic Field
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=Qid-_4hXo_s
Most of us hardly ever think about the earth's magnetic field. We might be aware that it helps guide birds as they migrate and ensures that our compasses point north, but not realize that it is one of the crucial components that make life on earth possible. Yet, the processes in the earth’s core that create the magnetic field are poorly understood. VOA’s George Putic reports. • Originally published at - http://www.voanews.com/media/video/un...
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