Improved global cropland data as an essential ingredient for food security

See, Linda; Fritz, Steffen; You, Liangzhi; Ramankutty, Navin; Herrero, Mario; Justice, Chris; Becker-Reshef, Inbal; Thornton, Philip; Erb, Karlheinz; Gong, Peng; Tang, Huajun; van der Velde, Marijn; Ericksen, Polly; McCallum, Ian; Kraxner, Florian; Obersteiner Michael