A precise record of the last major reversal of the Earth's magnetic poles can be found in ancient trees. Researchers say this event 42,000 years... Ancient Trees Show When The Earth's Magnetic Field ...
Ancient Architects on MSN
Global catastrophe 42,000 years ago - did the poles flip?
Evidence from ancient kauri tree rings suggests something dramatic happened about 42,000 years ago — a magnetic pole reversal that would have rocked the planet. Extreme environmental change and cosmic ...
A fungus from a group that ravages trees around the world is now infesting New Zealand's ancient, symbolic kauris. Waipoua Forest Trust One of the world's oldest and largest living trees stands just a ...
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