Key points from article :
Earth's life support systems have been damaged by human-caused pollution and destruction of the natural world, according to an analysis led by Prof Katherine Richardson of the University of Copenhagen.
6 out of 9 planetary boundaries have been broken, meaning the Earth is now "well outside the safe operating space for humanity".
The most worrying finding is that all 4 of the biological boundaries are at, or close to, the highest risk level.
The planetary boundaries are not irreversible tipping points, but they do increase the risk of fundamental changes in the Earth's systems.
Scientists need more data to better understand the current situation and how planetary boundaries interact with each other.
The Earth's systems have been pushed into disequilibrium, and the ultimate global environmental conditions remain uncertain.
The study was published in the journal Science Advances.