Believe it or not, humans may not be drawn to reusable cup schemes due to a sense moral duty or good old-fashioned guilt.
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It's about to be Red Cup Day at Starbucks. When is it and how to get the free coffee swag?An unofficial annual holiday observed by coffee enthusiasts is about to ... Customers who return to Starbucks with the custom cup, or any reusable cup, will receive a $0.10 discount on their ...
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