Climate destabilization caused by human carbon pollution of the atmosphere can reach extinction event levels. Unfortunately, what extinction level climate destabilization exactly is has been poorly defined. This blog posting is an attempt to define this concept with more specificity.
Extinction level climate destabilization has been defined previously as half of all species on Earth going extinct. It has also been defined as most of the human race going extinct. (James Lovelock the climate scientist and inventor of the Gaia term once defined it as less than 200 million humans surviving close to the North Pole because of global warming.)
I would like to propose what may be a more realistic definition. Extinction level climate destabilization would be a loss of 50% or more of all species on the planet with a reduction in the human population of between 50 and 90%.
At first, that doesn't sound so bad as they're still be mating human survivors. What it isn't seen immediately is that the amount of chaos and turmoil on a planet that loses from 50 to 90% of its human population and 50% of all of its species in as little as 40 to 80 years is a place that would be defined in terms of a living hell and cemetery.
What is also not generally recognized is that if the human population was reduced by 50 to 90% it might not have enough remaining genetic diversity to battle all of the new bacteria and viruses coming out of the melted ice that haven't been seen for hundreds of thousands of years. It also might not be able to survive the many diseases and infestations that would be moving continually toward the warmer poles into populations that have no traditional immunities to them. Biological history is loaded with episodes of massive population reductions that survive the sudden reduction, but later succumb to some new illness that the remaining genetic diversity could not survive...
We have already entered into the zone of catastrophic climate destabilization. We appear to be approaching the tipping points of irreversible climate destabilization. From there it is a unthinkably short distance to extinction level climate destabilization caused by the human caused carbon pollution of our atmosphere --- global warming.
For information on what you can do to keep us from going over the next climate destabilization cliff, click here.
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