As of January 2021, scientists agreed that we had crossed five of the planetary boundaries. That is, we are beyond the point where negative impacts of these changes can be fully mitigated.
In the list below, select the five planetary boundaries that we have crossed.
O Biosphere Integrity
O Climate Change
O Novel Entities
O Stratospheric Ozone Depletion
O Atmospheric Aerosol Loading
O Ocean Acidification
O Biogeochemical Flows
O Freshwater Use
O Land-system Change