After high levels of lead was found in baby food last fall, sickening dozens of children, officials last month warned they are still finding the heavy metal in some powdered cinnamon products and urged the public to avoid certain brands. Most of the world moved to eradicate lead from nearly all products by the 1990s, so why do we keep finding the toxic element? Vox takes a deep dive into the issue, exploring why it remains a problem and who is most at risk.
