Science
Did an ancient magnetic pole flip change life on Earth? – podcast – The Guardian
Nicola Davis explores how an ancient tree, pulled from a bog, has been used to uncover the timing and environmental impacts of the Earth’s last magnetic pole switch…
What would it be like if the Earths magnetic pole switched? Migrating animals and hikers would certainly need to reset their compasses, but could it play real havoc with life on Earth? Analysing the rings of an ancient tree pulled from a bog in New Zealand, researchers have been investigating what happened the last time north and south flipped 42,000 years ago. Nicola Davis speaks to Prof Chris Turney about how it changed the chemistry of the atmosphere and, if combined with a period of lower solar…
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