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Upper Delaware Scenic & Recreational River, PA; you can become a Junior Ranger by completing the activities in either of the two Junior Ranger booklets.

Now in Zambia: World’s Lowest-Power Base Station

A Tiny Cell-Phone Transmitter Takes Root in Rural Africa Rural areas could benefit greatly from a rugged outdoor base station. http://www.technologyreview.com/news/515346/a-tiny-cell-phone-transmitter-takes-root-in-rural-africa/