Washington Post: Because of human-generated carbon emissions, ocean acidity is 30% higher than in preindustrial times and is expected to double by the end of the century. To determine the effects on marine life, researchers at the National Oceanic and Atmospheric Administration are tracking changes in the ocean’s pH in eight coastal and coral reef ecosystems, from the Gulf of Mexico to coastal Hawaii. They are finding that some parts of the world, and some species, are more vulnerable than others to ocean acidification. NOAA hopes to use the research to better anticipate potential problems and protect vulnerable species.