The French supermarket giant Carrefour has over 1,000 stores in Spain, and it is now allowing customers to bring their own food storage containers (like Tupperware) in all locations. Shoppers are able to put their fresh groceries into glass or plastic containers rather than having them wrapped up or put into a plastic bag. The only stipulation is that the containers must be transparent and come with lids. The move is part of Carrefour’s “Act for food” campaign which aims to cut down on plastic use both in its own operations and for its shoppers in their homes. As part of this initiative they have launched a plan to reduce the overall weight of their product packaging, and are using a new biodegradable tray for fish and seafood.