https://en.wikipedia.org/wiki/Planetary_boundaries https://en.wikipedia.org/wiki/Planetary_boundaries "Planetary boundaries is a concept highlighting human-cau

https://en.wikipedia.org/wiki/Planetary_boundaries https://en.wikipedia.org/wiki/Planetary_boundaries "Planetary boundaries is a concept highlighting human-caused perturbations of Earth systems making them relevant in a way not accommodated by the environmental boundaries separating the three ages within the Holocene epoch."