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Alanna Mitchell Save Share About 42,000 years ago, Earth was beset with oddness. Its magnetic field collapsed. Ice sheets surged across North America, Australasia and the Andes. Wind belts shifted across the Pacific and Antarctic oceans. Prolonged drought hit Australia; that continentâs biggest mammals went extinct. Humans took to caves to make ochre-colour art. Neanderthals died off for good. Through it all, one giant kauri tree stood tall â until, after nearly two millenniums, it died and fell in a swamp, where the chemical records embedded in its flesh were immaculately preserved. That tree, unearthed a few years ago near Ngawha Springs in northern New Zealand, finally allowed researchers to fit a tight timeline to what before had seemed like an intriguing but only vaguely correlated series of events. ....
Neanderthals died out after Earth's magnetic poles flipped, causing a climate crisis 42,000 years ago, a study says yahoo.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yahoo.com Daily Mail and Mail on Sunday newspapers.
An exhibit shows a Neanderthal family at the Neanderthal Museum in Krapina, Croatia, in February 2010. Earth’s magnetic poles flipped 42,000 years ago, which may have triggered a global climate crisis, a new study found. The resulting changes in temperatures and radiation levels may have killed off many large mammals. The event may have ultimately contributed to the extinction of Neanderthals. Earth saw a lot of commotion when its magnetic poles flipped 42,000 years ago. Scientists have known about the flip since the late 1960s. Earth’s magnetic poles aren’t static – they’re generated by electric currents from the planet’s liquid outer core, which is constantly in motion. As of late, Earth’s magnetic North pole has wandered considerably on a path toward northern Russia. ....
Reuters/Nikola Solic Earth s magnetic poles flipped 42,000 years ago, which may have triggered a global climate crisis, a new study found. The resulting changes in temperatures and radiation levels may have killed off many large mammals. The event may have ultimately contributed to the extinction of Neanderthals. Earth saw a lot of commotion when its magnetic poles flipped 42,000 years ago. Scientists have known about the flip since the late 1960s. Earth s magnetic poles aren t static they re generated by electric currents from the planet s liquid outer core, which is constantly in motion. As of late, Earth s magnetic North pole has wandered considerably on a path toward northern Russia. ....