Mike Kasavich, a lifelong coal miner, exits "the hole" after a 10-hour morning shift at the Mathies coal mine in western Pennsylvania. Black lung disease is increasing among miners, yet they are struggling to get disability reimbursement for the illness.
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Dan Gates, with Albuquerque's Air Quality Division, measures pollen in the air. Despite a 1994 city ban on trees like mulberry, elm and cottonwood, residents have to wait decades for existing trees to die before pollen levels likely will go down.