March of Science Report No. 445

food-tray-liner
Ages ago airlines used to place a sheet of grey-blue plasticised paper on their food trays, a kind of “sticky” layer that prevented cups of coffee etc from sliding all over the place. Now they don’t need to use the paper: the “sticky” layer is a quality of the surface of the tray itself. Less waste, less litter. Why, things get better every day!