Can postage stamps — which are used to transport paper and require the burning of petroleum fuels for delivery — be green? Beginning in April 19, 2011, the United States Postal Service created a new set of social awareness postage stamps. Each stamp has a picture of things one can do to help the environment.
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Environmental topic is one of the hottest issues in these common days. We all can feel the impacts of global warming in our daily lives, such as the change of the weather uncertainly, many disasters happen everywhere, and the other simple things. Therefore, many people try to do green campaign as their efforts in saving
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