Oceans are at their most acidic point in 26,000 years

2022 CEWorldwide

"The IPCC Sixth Assessment Report concluded that “[t]here is very high confidence that open ocean surface pH is now the lowest it has been for at least 26 kyr [thousand years] and current rates of pH change are unprecedented since at least that time.” As the pH of the ocean decreases, its capacity to absorb CO2 from the atmosphere also declines."

World Meteorological Organization, State of the Global Climate 2021 (Geneva, Switzerland: World Meteorological Organization, 2022), 11-12.

Image: NOAA photo library, fis01026, 2016, Attribution 2.0 Generic (CC BY 2.0).