Earth’s magnetic field flipped 42,000 years ago, extinctions and upheaval followed: Study
Scientists were aware of a temporarily flip in the magnetic poles some 40,000 years ago, but not if & how it impacted life on Earth.
from http://www.firstpost.com/tech/science/earths-magnetic-field-flipped-42000-years-ago-extinctions-and-upheaval-followed-study-9331021.html
from http://www.firstpost.com/tech/science/earths-magnetic-field-flipped-42000-years-ago-extinctions-and-upheaval-followed-study-9331021.html
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