What do the Nazi war machine and South Dakota corn farmers have in common? Both spread around a lot of ammonia -- but for very different reasons. Nazi scientist Fritz Haber devised weapons and poisons around ammonia, a man-made nitrate. American scientists followed suit, according to a fine article in the new
Smithsonian magazine. After WWII, our government had tons of ammonium nitrate. They considered dumping it on the forests to give the trees a treat, but someone in the ag department suggested they put it on the farmland to fertilize the soil.
For better or worse, farming has never been the same. As agri-experts toyed with fertilizers over the next few decades, crop yields soared. The Smithsonian article's author suggests that two of every five people alive today might not be here (because there wouldn't be enough food) if Haber and his cohorts hadn't invented synthetic nitrogen. (Well, give the guy in the ag department a little credit, too. Haber wanted to kill with his nitrates; our ag bureaucrat wanted to grow food.)
Corn dates back 9,000 years to the Mayan civilization, but the tall dark grass has really taken over the grocery store shelves since chemical fertilizers were invented. Today, a fourth of the merchandise at your local store consist of corn.
Of course, the nitrogen news isn't all positive. We've saturated the earth with nitrates, and that could eventually cause severe problems to modern civilization. Might it be Fritz Haber's unwittting revenge after all these years?