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Earth's next mass extinction now has a new timeline

Scientists believe the Sixth Mass Extinction event is already underway, but it could take longer than initially thought to peak.

@AdamHuntTT
Published Jul 31, 2022 6:08 AM CDT

A study on the Sixth Mass Extinction titled "Relationship between extinction magnitude and climate change during major marine and terrestrial animal crises" has been published in the journal Biogeosciences.

Earth's next mass extinction now has a new timeline 01 | TweakTown.com

Kunio Kaiho, a Japanese climate scientist from Tohoku University, has estimated when we might see the next mass extinction event on Earth. Five major extinction events have been identified in Earth's history and are usually associated with some form of extreme climate change, either due to heating or cooling, such as what followed from the impact of the Chicxulub asteroid that caused the last mass extinction event.

Kaiho found a roughly linear relationship between Earth's average surface temperature and Earth's biodiversity, with greater deviations from the norm associated with extinction events of a greater magnitude. Global cooling events resulted in the largest mass extinctions with cooling of about 7°C, while for global warming events, they occurred with about 9°C warming.

Read more: The 'Sixth Mass Extinction' is already underway, experts warn

It has been estimated previously that global warming of 5.2°C would result in a massive extinction event equivalent to the previous five. However, Kaiho believes that 9°C warming is necessary before a similarly devastating event would occur. According to Kaiho, "the 9°C global warming will not appear in the Anthropocene at least till 2500 under the worst scenario."

"Prediction of the future anthropogenic extinction magnitude using only surface temperature is difficult because the causes of the anthropogenic extinction differ from causes of mass extinctions in geologic time," Kaiho noted.

You can read more from the study here.

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Adam grew up watching his dad play Turok 2 and Age of Empires on a PC in his computer room, and learned a love for video games through him. Adam was always working with computers, which helped build his natural affinity for working with them, leading to him building his own at 14, after taking apart and tinkering with other old computers and tech lying around. Adam has always been very interested in STEM subjects, and is always trying to learn more about the world and the way it works.

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