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Scientists are trying to figure out how chemicals in the air interact with each other to make people sick. So they're building an instrument — a "lung in a box" — that goes way beyond the usual chemical monitors.
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The Standard Heights neighborhood sits next to the nation's second-largest gasoline refinery. Recently, residents learned a new truth about the plumes of exhaust they see every day: Exxon Mobil's aging refinery and petrochemical facilities — like many others — are pumping out far more pollution than the law allows.