"...While it can’t be seen in a glance, what’s happening to the marine environment on the Pacific Northwest coast as a result of the growing concentration of carbon dioxide in Earth’s atmosphere is indeed dramatic. Since the mid-18th century, human activity—mainly fossil fuel burning—has increased the atmospheric concentration of CO2 by about 40 percent. Because oceans absorb about a quarter of the CO2 released into the atmosphere each year, as more CO2 enters the atmosphere, more ends up in the ocean. “Think of carbon as a global pollutant that affects the ocean everywhere it touches the sky,” explains Stanford University marine science professor and Hopkins Marine Station director Steve Palumbi.
As CO2 dissolves in seawater, chemical reactions produce an acid. Over the past 250 or so years, the acidity of the world’s oceans has increased 30 percent. Scientists believe oceans have not experienced the current level of acidity in about 2 million years. .."
VIA 'Occupy the EPA':