(LINCOLN JOURNAL STAR) The Lincoln Journal Star reports, "Feeding a global population that is projected to hit 9 billion by 2050 will require more water for agriculture, especially in such poverty regions as Sub-Saharan Africa, where water is scarce.
Researchers estimate that growing those crops will require 13 million cubic kilometers of water annually, compared to the 7 million cubic kilometers used now.
Jeff Raikes, CEO of the Bill and Melinda Gates Foundation, made it simple to imagine that amount of water: Think of a river one kilometer (about 3,280 feet) deep and one kilometer wide, flowing around the circumference of Earth 300 times."
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