A view of the Acre River, which separates Bolivia, right, from Brazil. Just upstream, the river also is the Brazil-Peru Border, where an international bridge carries the Transoceanic Highway. Financed in part by Brazil, and built by a consortium which includes Brazilian construction company Oderbrecht, the US$1.3 billion highway will link Peru's Pacific ports, and thus China, with the regional powerhouse of Brazil, poised to become the 5th largest economy in the world. (Australfoto/Douglas Engle)