Word: soils
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...support I got worldwide." He holds a U.S. passport but says he "did not ask the U.S. to interfere on my behalf although I am a dual citizen. I wanted to keep the battle lines clear and clean. I was fighting an Egyptian cause as an Egyptian on Egyptian soil." When the White House informed President Hosni Mubarak last August that Ibrahim's conviction jeopardized aid, Egyptians condemned the U.S. for meddling. The head-scratching continues in Cairo about why the government is dragging out a case that has so damaged the country's reputation. Some speculate that Mubarak...
...presence of U.S. troops on Korean soil is as unfortunate as it is necessary, however, because it is and has always been a constant potential source for friction between the two nations. The only difference is that South Koreans have a newfound confidence and are naturally becoming more assertive. Revision of SOFA is a necessary step in alleviating that friction and improving U.S.-Korean relations...
...that appeared in Science last week: it's nothing more complicated than freezing and thawing--the same process that causes roads to buckle in developed parts of the world. According to lead author Mark Kessler, it all starts with a field strewn randomly with rocks lying on top of soil. No field is perfectly flat, of course, and when the soil freezes in winter, any slight bump expands, pushing the rocks up and to the side. When things thaw out, though, the bump subsides straight down, so the rocks stay where they are. Next winter, the bump expands again...
Over time, Kessler says--and computer simulations prove it--the rocks, under pressure from expanding bumps on all sides, are gradually forced into narrow strips that outline broad swaths of pure soil. At the same time, irregularities in the thickness of the rock lines are smoothed out by this continuous squeeze. Whether the final result looks like a circle or a polygon depends on how thick the initial stone layer is and how much the local soil expands when it freezes. Stripes turn up when the process happens on a hillside. No aliens necessary--and knowing how these remarkable shapes...
...moment. "It's a social thing to do. You can get a hookah and hang out," says Rothe, passing the hose to his friends at the Parisian-style Gypsy Cafe. "It's really smooth, like flavored steam almost." The tobacco, wholesalers say, is grown in low-nitrogen soil, which makes its nicotine content lower than what is found in cigarettes...