Associated Press: Iowa’s economic development arm and a shuttered ethanol plant at Emmetsburg that had promised to produce millions of gallons from crop waste have reached a settlement that lets the company off the hook for millions of dollars in tax incentives. The Iowa Economic Development Authority approved a settlement with Poet DSM Advanced Biofuels last week, ending a contract of incentives that helped enable construction of the massive plant, the Des Moines Register reported. The plant, which opened in 2014, was billed as an ultra-green biofuel producer that used corncobs, husks and stalks instead of corn to make ethanol. Poet, the nation’s largest ethanol producer, idled the plant in July and laid off 52 workers this year. The company blamed the closure on federal actions that decreased ethanol demand and an overall drop in fuel use during the coronavirus pandemic.