Bad diets kill millions of people globally every year, and lead to tens of billions of dollars in health costs , often placing the heaviest burden on communities who are least able to afford it. Children, with limited decision-making power, are particularly vulnerable to this. Legislators and government officials have worked to rein in this public health crisis by enacting laws that require food companies to be transparent about their ingredients and limit the advertising of unhealthy foods. In public, the world’s biggest and richest food companies such as Coca Cola, PepsiCola, and Mondelez say they want to be part of the solution. But behind closed doors, they have taken governments to court to delay, dilute, and derail public health laws, which the companies say violate their rights.…