The Healthy Beverage Co. introduced Steaz Zero Calorie Sparking Green Tea, a zero-calorie carbonated soft drink. The product offers 120 mg. of tea antioxidants, the company says. Steaz Zero Calorie Sparkling Green Tea is available in Raspberry, Orange, Blueberry, Pomegranate and Black Cherry varieties. It is certified organic by Quality Assurance International as well as Fair Trade certified by TransFair USA. A four-pack of 12-ounce glass bottles retails for $4.99.