19 'mass extinctions' had CO2 levels we're now veering toward, study warns
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19 'mass extinctions' had CO2 levels we're now veering toward, study warns
https://www.livescience.com/planet-earth/climate-change/19-mass-extinctions-had-co2-levels-were-now-veering-towards-study-warns
The research looked at peaks in biodiversity loss and their relationship with atmospheric CO2, finding 50 events over the last 534 million years that can be considered mass extinctions.