When you buy a bottle of Coca-Cola or a Snickers bar, the price probably doesn't break the bank. But what if the true cost of the plastic packaging is taken into account at the supermarket checkout? Say, for example, the cost to clean up the pollution from making that plastic, or the cost to manage the packaging when you throw it away? Or even the medical bills that rack up from human health threats connected with plastics? And let's not forget the cost of damages inflicted on terrestrial and marine life, along with entire ecosystems. That receipt would be a mile long.