Workers in an Amazon.com warehouse were routinely sent to the emergency room because of sweltering, suffocating heat that sometimes exceeded 110 degrees — and because Amazon refused to open warehouse doors, fearing theft, according to a devastating exposé in the Allentown, Pennsylvania Morning Call. After workers, an E.R. doctor and a security guard complained, federal regulators investigated the warehouse and recommended changes. Amazon responded with popsicles, bandanas and finger pointing.