IBM Enlists Walmart, Nestlé, Unilever, Dole For Food Safety Blockchain

Back in September 2006, the U.S. experienced what became known as the "spinach crisis." Following the discovery of an outbreak of E.coli linked to uncooked spinach, it took over two weeks to trace the tainted product to a single 50-acre farm in California, by which time every bag of spinach in the US had been pulled from the shelves. There were three deaths, hundreds taken ill, and it took many years for the U.S. spinach industry to recover.