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Sputnik International
Reversal of Earth s magnetic poles may have triggered Neanderthal extinction - and it could happen again
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Science and Research – Ancient kauri trees reveal a turning point in Earth s history 42,000 years ago – NIWA
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Reversal of Earth s magnetic poles may have triggered Neanderthal extinction -- and it could happen again
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IMAGE: Using an ancient kauri tree log from Ngāwhā, New Zealand, scientists have dated the timing and environmental impacts of the last magnetic pole switch. view more
Credit: Nelson Parker (www.nelsonskaihukauri.co.nz)
The temporary breakdown of Earth s magnetic field 42,000 years ago sparked major climate shifts that led to global environmental change and mass extinctions, a new international study co-led by UNSW Sydney and the South Australian Museum shows.
This dramatic turning point in Earth s history - laced with electrical storms, widespread auroras, and cosmic radiation - was triggered by the reversal of Earth s magnetic poles and changing solar winds.