Various: Global Change Biol. 14, 2910–2922 (2008) The influence of elevated atmospheric CO2 on soil’s ability to store carbon is a matter of great debate, with some studies reporting increases in soil organic matter — and hence carbon storage — and others, no change or even a loss. Now, a nine-year investigation suggests that increased litterfall could enhance soil carbon storage in a greenhouse world. John Lichter, of Bowdoin College, Maine, and colleagues, examined the effect of …