the National Oceanic and Atmospheric Administration’s “Carbon Program.” whose web site says:
Since the beginning of the Industrial Revolution, the pH of surface ocean waters has fallen by 0.1 pH units. Since the pH scale, like the Richter scale, is logarithmic, this change represents approximately a 30 percent increase in acidity.
Except that the true percentage is 0.7% for a 0.1 unit change in pH. If the people ever learn how pathetically bad the science is, they'd stop paying even a nickel of tax money for it.