We're already seeing plenty of real impacts on ecosystems (skeletal dissolution, slower coral growth). On top of that, acidification has "momentum" - even if we

We're already seeing plenty of real impacts on ecosystems (skeletal dissolution, slower coral growth). On top of that, acidification has "momentum" - even if we stopped emitting carbon today (hah) the oceans would continue dropping pH for decades. Given those two facts, I assumed we'd crossed that boundary already.