Meanwhile, George W. Bush , a man who has spent his career in the most unpredictable industries imaginable, oil exploration and baseball, suddenly becomes the advocate of the cut-and-dried machine solution to a complex and subtle problem well beyond the tolerances of the machines in use.

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The machine creates a safe radioactive solution which can be injected into patients before a scan.

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Researchers at the University of Arizona's Controlled Environment Agriculture Center (CEAC), in collaboration with Sadler Machine Company (SMC), have come up with one solution: to house plants and astronauts in an inflatable habitat.

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In a lab at Brookhaven National Laboratory on Long Island, Gene-Jack Wang is injecting overeaters with a radioactive sugar solution and putting them into a positron-emissions tomography machine to see how their brains react to food.

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Then a solution of calcium and water is applied by a modified winter gritting machine with a very fine sprinkler-like system attached.

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His six-pound machine uses peritoneal dialysis but has catalysts and enzymes that remove the toxins from dirty solution so the liquid can be reused.

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