Earth’s magnetic field – Uncommon Descent

Paper: Earth’s magnetic field can change ten times faster than thought

If this holds up, perhaps it will play a role one day in unraveling some mysteries.

When Earth’s magnetic field nearly disappeared

Just before the Cambrian explosion. Generally speaking, radiation is much more likely to produce damaging mutations than helpful ones. It would be interesting to know if some Ediacaran species disappeared at this point.

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