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Ancient Kauri Trees Reveal A Turning Point In Earth's History 42,000 Years Ago


Friday, 19 February 2021, 8:29 am
A new international study using ancient swamp kauri from
Northland shows a temporary breakdown of Earth’s magnetic
field 42,000 years ago sparked major climate shifts leading
to global environmental change and mass
extinctions.
This dramatic turning point in Earth’s
history was triggered by a reversal of Earth’s magnetic
poles and changing solar winds.
Study authors from
UNSW Sydney, the South Australian Museum, NIWA and the
University of Waikato, dubbed this episode the ‘Adams
Transitional Geomagnetic Event’, or ‘Adams Event’ for
short - a tribute to science fiction writer Douglas Adams,
who wrote in The Hitchhikers Guide to the Galaxy that ....

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Earth to reach temperature tipping point in next 20 to 30 years, new NAU study finds


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IMAGE: Graphic depicting the temperature tipping point at which Earth s plants will start decreasing the amount of human-caused carbon emissions they can absorb.
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Credit: Victor O. Leshyk/Northern Arizona University
Earth s ability to absorb nearly a third of human-caused carbon emissions through plants could be halved within the next two decades at the current rate of warming, according to a new study in
Science Advances by researchers at Northern Arizona University, the Woodwell Climate Research Center and the University of Waikato, New Zealand. Using more than two decades of data from measurement towers in every major biome across the globe, the team identified a critical temperature tipping point beyond which plants ability to capture and store atmospheric carbon a cumulative effect referred to as the land carbon sink decreases as temperatures continue to rise. ....

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