Ocean health is moving into a danger zone, with rampant human-caused carbon dioxide emissions having already pushed ocean acidification levels beyond safe limits in large swaths of the marine environment, according to a recent study. The new findings underline the urgent need to ramp up protection of the world’s oceans, while simultaneously slashing CO2 emissions, […]
  • Scientists have known for decades that soaring atmospheric carbon dioxide emissions are causing changes in ocean chemistry, threatening marine life and ecosystems.
  • In June 2025, a study found that ocean acidification has passed a safe threshold across large swathes of the world’s marine environment, not only near the sea surface, but also up to 200 meters (656 feet) deep. The effect is especially severe in polar regions.

The study