There's no better way to beat the heat of summer months than with ice cream, according to Dairy Management Inc. and National Milk Producers Federation. In July, Americans will enjoy more than 140 million gallons of ice cream. That's more than any other month, and why July is National Ice Cream Month.But, what could be cooler than ice cream this summer? Would you believe dairy farmers? According to a national survey of 500 adults recently conducted by the research company Roper-Starch Worldwide for Dairy Management, Inc.(TM) (DMI), and the National Milk Producers Federation (NMPF), 74 percent of Americans believe dairy farmers make a significant contribution to society -- only teachers (89 percent) and doctors (88 percent) ranked higher.