Time Magazine: But a new paper published in the Nov. 19 issue of Nature demonstrates that the oceans’ ability to absorb man-made carbon may be dwindling — and that has worrying ramifications for future climate change. While the ocean is now absorbing more carbon in total than ever before, the waters are sucking up a smaller percentage of the CO2 emitted by humans. That could mean that there’s a limit to the ocean’s capacity — and that we might be hitting it. (See the top 10 green ideas of …