C4 grasses prosper as carbon dioxide eliminates desiccation in warmed semi-arid grassland.
Morgan JA, LeCain DR, Pendall E, Blumenthal DM, Kimball BA, Carrillo Y, Williams DG, Heisler-White J, Dijkstra FA, West M. C4 grasses prosper as carbon dioxide eliminates desiccation in warmed semi-arid grassland. Nature. 2011 Aug 03; 476(7359):202-5.