How Was Life Almost Wiped Out on Earth? Acid Oceans

One of the symptoms of rising CO2 in the atmosphere is increasing acidity of the oceans. Measurements have shown such a rise for several decades now, leading to coral die-off, changes and diminishment of fish spawning. Now, we begin to know how bad it could become.

Acidic oceans helped fuel the biggest mass extinction in the history of life on Earth, a study says.

The Permian-Triassic mass extinction, which took place 252 million years ago, wiped out more than 90% of marine species and more than two-thirds of the animals living on land.
Its causes have been much debated.

Now, studies of rock in the United Arab Emirates, which were on the ocean floor at the time, are providing a detailed record of rapid changes in ocean acidity — linked to massive volcanism in the Siberian Traps. Massive amounts of CO2 can not be absorbed by the atmosphere alone so much is ‘dumped’ into the oceans, leading to acidification too rapid for marine life to adapt.


“This is a worrying finding, considering that we can already see an increase in ocean acidity today that is the result of human carbon emissions.”

It’s not just geology, folks.  It’s the future.

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