Summary:
- The study suggests that the acidity levels in the world's oceans have already reached a "danger zone" due to the absorption of excess carbon dioxide from the atmosphere.
- This increased ocean acidity can have severe consequences for marine life, as it makes it harder for organisms like coral and shellfish to build their calcium-based shells and skeletons.
- The researchers warn that urgent action is needed to reduce greenhouse gas emissions and mitigate the ongoing acidification of the oceans, which is a critical threat to the health of our planet's ecosystems.