April 28, 2008
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Google Maps error causes me a bit of consternation
I arrived in Liberal, Kansas after dark, Googled the location of Wal-Mart where I hoped to spend the night, drove there - and found no Wal-Mart. It took a few minutes, but I found it lurking a few blocks over. I only recently started using Google Maps to locate businesses and now wonder how often this kind of thing happens.
Night camp:
Wal-Mart parking lot, Liberal, Kansas
Teosinte and the Improbability of Maize
The ancestors of wheat, rice, millet, and barley look like their domesticated descendants; because they are both edible and highly productive, one can easily imagine how the idea of planting them for food came up. Maize can't reproduce itself, because its kernals are securely wrapped in the husk, so Indians must have developed it from some other species. But there are no wild species that resemble maize. Its closest genetic relative is a mountain grass called teosinte that looks strikingly different - for one thing, it "ears" are smaller than baby corn served in Chinese restaurants. No one eats teosinte, because it produces too little grain to be worth harvesting. In creating modern maize from this unpromising plant, Indians performed a feat so improbable that archaeologists and biologists have argued for decades over how it was achieved. Coupled with squash, beans, and avocados, maize provided Mesoamerica with a balanced diet, one arguably more nutritious than its Middle Eastern or Asian equivalent.