Dangerous Weakening of Earth’s Magnetic Field Tracked by Scientists

Strange Sounds – February 7, 2017

Every so often, the magnetic field has flipped. North has pointed south, and vice versa. And when the field flips it also tends to become very weak. Scientists are tracking this dangerous weakening of the Earth’s magnetic field.

Without a magnetic field, our atmosphere would slowly be stripped away by harmful radiation, and life would almost certainly not exist as it does today.

You might imagine the magnetic field is a timeless, constant aspect of life on Earth, and to some extent you would be right. But Earth’s magnetic field actually does change. Every so often — on the order of several hundred thousand years or so — the magnetic field has flipped. North has pointed south, and vice versa. And when the field flips it also tends to become very weak.

What currently has geophysicists like us abuzz is the realization that the strength of Earth’s magnetic field has been decreasing for the last 160 years at an alarming rate.

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