Earth’s oceans have a pH of about 8.1. But they’re dropping due to CO2. Ocean acidification is a huge deal. It makes shells thinner and coral grumpy. Fish don’t vote, but we should listen.
Rain is naturally acidic (pH 5.6). But “acid rain” from pollution can hit pH 4. That’s like vinegar falling from the sky. Umbrellas won’t save you.
Your sweat is acidic (pH 4.5). That’s why bacteria love it. You’re basically a walking pH laboratory. Glamorous, right?
