Posted: August 6, 2014
Source: Earth Policy Institute
Water scarcity may be the most underrated resource issue the world is facing today.
Seventy percent of world water use is for irrigation.
Each day we drink nearly 4 liters of water, but it takes some 2,000 liters of water—500 times as much—to produce the food we consume.
1,000 tons of water is used to produce 1 ton of grain.
Between 1950 and 2000, the world’s irrigated area tripled to roughly 700 million acres. After several decades of rapid increase, however, the growth has slowed dramatically, expanding only 9 percent from 2000 to 2009. Given that governments are much more likely to report increases than decreases, the recent net growth may be even smaller.