I have just found out about the articles that scientist have recently published, talking about some planetary boundaries that we have crossed.
I wasn’t really able to get the full hang of it, but I’d really like to understand the concept of these boundaries and what they are, since there are only 3 left and 2 years ago we were crossing the fourth one and now we’re passed the 6th one, and according to news it could potentially cause societal collapse.
So, what are these boundaries and what happens if we cross all 9? How do they affect our society?
Edit:
The article I am on about is found [here](https://www.science.org/doi/10.1126/sciadv.adh2458)
In: 1826
They are metrics used for the continuation of life as we know it. If too many get too bad, human beings will suffer and start to die. 1 Climate change (we will eventually get to a point where the climate is irreparably damaged and nothing we do can fix it) 2 Biosphere integrity (mass extinctions and changes to natural climates due to climate change) 3 land-system change (deforestation and urbanization) 4 Freshwater use (the availability of fresh water as drinking water) 5 Biogeochemical flows (the way that essential chemicals nitrogen and phosphorus becomes bioavailable through plants like legumes) 6 ocean acidification (the ocean becoming more acidic due to absorption of carbon, changing natural environments and killing off fish) 7 atmospheric aerosol pollution (smog and industrial fumes) 8 Stratospheric ozone depletion (the ozone hole getting bigger due to now-banned CFCs, causing more UV penetration leading to cancer) 9 Release of novel chemicals (the concentration of dangerous heavy metals that can cause disorders or other health issues)
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