3 ms·

No, it does not. I don't believe that we could end 81% of marine species, even with the worst that we could do. https://en.m.wikipedia.org/wiki/Permian%E2%80%

• bmitc 4y ago
  The existence of prior extinction events does not negate the fact that humans are extremely destructive to the planet. Even in your link to the Permian–Triassic extinction event, one of the most probable causes of loss of marine life was hypercapnia. Several of our modern-day coastal waters are highly hypoxic, enough to cause drastic changes in macro behavior of fish and even whales, and the hypoxic waters are directly caused by human actions. Humans, in the last century alone, caused half of the total forest loss in the past 10,000 years, and we were directly responsible for a large portion of the other half. This could go on and on. https://www.epa.gov/nutrient-policy-data/documented-hypoxia-and-associated-risk-factors-estuaries-coastal-waters-and https://www.epa.gov/nutrient-policy-data/documented-hypoxia-... https://ourworldindata.org/world-lost-one-third-forests https://ourworldindata.org/world-lost-one-third-forests It is simply incorrect and downright antagonistic to say that humans "humans are not particularly destructive to the planet".
  • chasil 4y ago
    If we go by co2, the guess is that something between 1,000 - 1,500 ppm is required to tip us into a greenhouse phase. Our current levels are well under 500 ppm. Humanity will have to work very hard to force the planet out of its current icehouse. We are definitely having an impact, and could well drive ourselves extinct, but I still see us as unable to implement drastic change, especially as some extinction events have required thousands of years to come to pass.