Despite the benefits, only four of the world’s largest food producers - Danone, Heinz, PepsiCo, and Unilever – have developed and implemented plans that regulate their suppliers’ environmental performance, according to a new report from analysts at Verdantix. Verdantix benchmarked the supply chains of the 12 largest global food firms. The 12 firms had collective revenues of $390 billion, but eight of its members — Associated British Foods, ConAgra Foods, General Mills, K...