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Cordero also tinkered with design, commissioning pointed-toe cowboy boots after she was inspired to bring back the passe fashion when a customer came into Groundlevel wearing vintage boots. Since 1970, lead emissions have dropped by ninety-eight percent; emmisions of fine soot, a cause of respiratory disease, have fallen seventy-nine percent; emissions of carbon monoxide, a killer poison, have declined twenty-eight percent; emissions of volatile organic compounds, a precursor of groundlevel ozone and smog, have fallen twenty-five percent; and emissions of sulfur dioxide, which leads to acid rain, have dropped forty-one percent. The engines shake because, under the air pressure found at groundlevel, the gases don't expand enough to fill the nozzle. |
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