Coca-Cola launches revamped diet cola in US as earnings drop

Coca-Cola announced plans Wednesday to launch a revamped "Coke Zero" in the United States as it expands offerings of low-sugar and non-carbonated beverages amid flagging demand for sweet sodas.The soda, "Coke-Cola Zero Sugar," which is already on the market in much of Europe and Latin America, will be available in the US starting in August.The launch comes at a time when more cities around the US have enacted, or are weighing, soda taxes.