A new assessment finds that the world’s oceans crossed the safe threshold for acidification in 2020, breaching a key planetary boundary and posing serious threats to marine life. Ocean acidification ...

A group of German scientists tested the effects of a more acidic ocean on sharks’ teeth and found that future generations of sharks could have weaker teeth because of changing ocean chemistry.

The ocean has absorbed a significant portion carbon dioxide emissions from human activities, decreasing the pH of the water and leading to a suite of chemical changes collectively known as ocean ...

The ocean is the lifeblood of our planet—producing over half of the world’s oxygen, regulating global temperatures, and supporting millions of species. Yet today, marine ecosystems are under severe ...

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PORTLAND, Maine — Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean's chemistry could put those ...