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Science and Research – Ancient kauri trees reveal a turning point in Earth's history 42,000 years ago – NIWA livenews.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from livenews.co.nz Daily Mail and Mail on Sunday newspapers.
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 ....
E-Mail 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. view more 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. ....
The power of community to help achieve an academic goal voxy.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from voxy.co.nz Daily Mail and Mail on Sunday newspapers.