global food supply carbon emissions The Global Food Challenge Explained in 18 Graphics water withdrawals 69 percent carbon emissions pressures trebati Äe je sve viÅ¡e 69 percent ca 25% of world’s food calories carbon emissions where one-quarter of the population is undernourished. 69 percent World Resources Institute World Resources Institute The Global Food Challenge Explained in 18 Graphics agriculture The Global Food Challenge Explained in 18 Graphics water withdrawals water withdrawals agriculture agriculture 69 percent ca 25% of world’s food calories