Walmart

A new report, "Supermarkets Fail to Make the Grade in Reducing Food Waste," scores the 10 largest grocery stores on how they handle food waste. No store got an A, but Walmart got a B.

The company billed it as a "first-of-its-kind" item that lets customers turn extra opioid painkillers into trash, but the CDC says just flush the medicine down the toilet.

Walmart, the world’s largest retailer, has long been criticized for its massive buying power and lower prices that can drive smaller stores out of…