ocean acidification Archives

A pteropod shell is shown dissolving over time in seawater with a lower pH. When carbon dioxide is absorbed by the ocean from the atmosphere, the chemistry of the seawater is changed. Credit NOAA Ocean Acidification Program

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography

Water Planet Chemistry: Ocean Acidification Is More Pervasive Than Previously Thought

by Keith CowingJune 24, 2025June 24, 2025

New research by an international team of oceanographers has found that ocean acidification has significantly compromised 40% of the global surface ocean, and 60% of the subsurface ocean to a […]

The Permian is a geologic period and system which extends from 298.9 ± 0.2 to 252.2 ± 0.5 (Million years ago). The Permian–Triassic (P–Tr or P–T) extinction event formed the boundary between the Paleozoic and Mesozoic eras. It is the Earth’s most severe known extinction event, with up to 96% of all marine species and 70% of terrestrial vertebrate species becoming extinct. -- NOAA

Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Fossils & Paleontology, Gaia - Planetary Perspectives, Press Release

How Survivors Spanned The Globe After Earth’s Biggest Mass Extinction

by Keith CowingApril 4, 2025April 4, 2025

Scientists don’t call it the “Great Dying” for nothing. About 252 million years ago, upward of 80% of all marine species vanished during the end-Permian mass extinction – the most […]