Plankton

I admit I don't give much thought to microscopic creatures, but plankton do form the bottom of the food chain and produce half of the world's oxygen.  After a brief mention in some reading, a search uncovered a study led by Stephanie Dutkiewicz with the Massachusetts Institute of Technology's Center for Global Change Science.  Ocean acidification will have a big impact on the survival and migration of plankton species.

Although recent, this is a story I hadn't come across in my regular browsing.  And yet, it serves as one more nail in our climate change coffin.

Update (November 15):  Carbon sequestration won't help reduce ocean acidity.

Update (November 29):  A study published in Science reports that coccolithophores have become ten times more abundant since the 1960s. That seems to correlate to higher levels of carbon dioxide, but the implications are unclear.