To distinguish Popchips from the hundreds of other foods in the snack aisle, Mr. Belling focused on word-of-mouth and grass-roots marketing.

WSJ: How I Built It: Popchip Makes Its Way Into the Snack Aisle

These payments could be financed by taxing harmful foods, like sugary beverages, highly caloric, processed snack foods and nutritionally poor options at fast food and other restaurants.

WSJ: Best of the Web Today: The Other Obesity Problem