Washington Post: “Researchers studied the effect of five laws requiring supermarkets and restaurants to reduce waste, part of a broader effort to keep food out of landfills, where it contributes to climate change…Nearly every state-led effort to ban food waste analyzed by researchers appears to be failing — except one, according to a new study. The study, published Thursday in the journal Science, singled out Massachusetts for reducing the amount of food that gets tossed in the trash. But its more troubling findings in other states reveal how one of the most seemingly straightforward ways to tackle climate change is, in practice, a tough problem to solve…”