Dioxins and PCBs are among a "dirty dozen" dangerous compounds known as persistent organic pollutants.

CNN: THE GREAT DIOXIN SCARE

As plastic is a petroleum based product these small particles act as persistent organic polluters, which means that they form a sponge attracting toxins such as insecticides and pesticides.

CNN: STORY HIGHLIGHTS

The consumer foods giant saw a strong start to fiscal 2013 last quarter with strong organic sales growth complemented by a recovery in gross margins in spite of a persistent rise in commodity costs.

FORBES: Heinz's Thicker Margins And Global Growth Will Lift Results