 Many rival retailers are offering their own discounts. Walmart is hoping to ring up more clothing sales during the back-to-school season. The retailer has updated its apparel line aimed at teenagers and young adults. Scott Worsley, NPR News, Washington. On Wall Street, the Dow is up 480 points. This is NPR. Hospital officials in Gaza say there have been deadly airstrikes in central and southern parts of the enclave today. Dozens of people may have been killed.