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I did a little research, and it seems paper cups are made debris leftover from wood milling. So, the positive affect may just be less trash. However, perhaps that pulp could be used for better things. https://www.quora.com/How-many-trees-do-you-need-to-cut-for-10000-paper-cups

that's a huge number indeed! Good idea =) I will post more ecology related videos soon, and will keep this idea in min ! Thank you =)