The looming threat of avian influenza

Even at a distance, it was obvious that there was something odd about the compost pile behind one of Brad Moline’s long white barns. Moline, 37, tops six feet, but the pile towered above him. It was 30 feet wide and 100 feet long, and the compost was crumbly and rich. But its sloping sides were studded with bones.There were seven other piles like this on the Moline family farm, in northwest Iowa, enough to fill three football fields up to the first row of seats. Bleached pelvic crests and the knobby ends of shins poked up from the humus alongside an unbroken wishbone.
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