/tags/circumnavigation circumnavigation en-US SA¹ú¼Ê´«Ä± Mon, 04 Mar 2013 18:00:00 GMT /show/topical-currents/2013-03-04/500-years-circumnavigating-earth 03/04/13 - Monday’s Topical Currents is with Harvard history professor Joyce Chaplin, author of ‘Round About the Earth: Circumnavigation From Magellan to… Mon, 04 Mar 2013 18:00:00 GMT /show/topical-currents/2013-03-04/500-years-circumnavigating-earth Joseph Cooper