The oceans just hit an ominous milestone

For 12,000 years, Earth’s steady climate has been the backdrop for human civilization. Now, scientists warn that balance is unraveling. A new report finds ocean acidification has joined the list of planetary “boundaries” humanity has crossed, signaling we’ve pushed Earth’s systems into unsafe territory. The change threatens corals, shell-building organisms, and the marine food web itself. With seven of nine boundaries already breached, researchers say the risks are compounding — but also stress that human action still matters in pulling back from the brink. Matt Simon with Grist has the full story.

Matt Simon

Grist

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