FILE - In this Aug. 6, 2009, file photo, the stubble of a grain field on the Camas Priaire is burned after the harvest producing a heavy plume of smoke in Lewiston, Idaho. Federal officials have approved Idaho's request to loosen field burning rules that backers say offer more flexibility to disperse smoke away from people but that health advocates say will lead to breathing problems for some area residents. The U.S. Environmental Protection Agency earlier this week issued a…

June 23, 2018