The paper, by A. O'Dea at Smithsonian Tropical Research Institute in Balboa, Panama, and colleagues was titled, 'Formation of the Isthmus of Panama.' ...

Navarro, an environmentalist who served two terms as the mayor of Panama City and is ... the chart casts serious doubt on Balboa’s claim. The Waldseemüller Map was the first to show a separate ...

The paper, by A. O'Dea at Smithsonian Tropical Research Institute in Balboa, Panama, and colleagues was titled, 'Formation of the Isthmus of Panama.' ...