Growing up, I never loved jewelry. But I’ve been wearing the same necklace for the past year: a wrapped lemon shark tooth ...

Rising Ocean Acidification Could Leave Sharks Toothless, and Scientists Say It’s Not Good News ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have warned that the planet crossed the global boundary for ocean acidification around the year 2020, ...

In the 21st century, the Earth’s oceans are growing warmer and more acidic. This change is happening slowly over the long-term, but it can also cause short-term, local spikes. These events are like ...

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 ...

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 ...

This is read by an automated voice. Please report any issues or inconsistencies here. PORTLAND, Maine — Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth ...

A critical measure of the ocean’s health suggests that the world’s marine systems are in greater peril than scientists had previously realized and that parts of the ocean have already reached ...

'We're seeing the effects of ocean acidification in real time -- from threatening lobster populations in the Gulf of Maine to eroding coral reefs in tropical waters' -- Chellie Pingree, US ...