Interaction between global warming, air pollution threatens global food security: Study : SCIENCE : Tech Times

http://www.techtimes.com/articles/11724/20140803/interaction-between-global-warming-air-pollution-threatens-global-food-security-study.htm

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Enjoy Pooh quotes: A.A. Milne, Winnie-the-Pooh

"To the uneducated an A is just three sticks." 
― A.A. Milne, The World of Winnie-the-Pooh