1 vote

Lost in migration: Earth's magnetic field overdue a flip

By Chris Wickham
LONDON | Wed Oct 3, 2012 8:18pm BST
(Reuters) - The discovery by NASA rover Curiosity of evidence that water once flowed on Mars - the most Earth-like planet in the solar system - should intensify interest in what the future could hold for mankind.

The only thing stopping Earth having a lifeless environment like Mars is the magnetic field that shields us from deadly solar radiation and helps some animals migrate, and it may be a lot more fragile and febrile than one might think.

read more http://uk.reuters.com/article/2012/10/03/us-science-earth-ma...

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