Spiegel: The Earth may have a greater capacity for absorbing CO2 than previously thought. Carbon dioxide is the primary perpetrator of climate change and most efforts to slow global warming go into preventing CO2 production and aiding CO2 absorption. But a new study suggests that the more CO2 we make, the more nature absorbs. So do we really need all those rainforests? Many scientists now look to carbon capture-and-storage technology as a way to ward off the worst effects of climate …