Where does the Amazon start? Study points to source
(Phys.org) —The Amazon is believed to be the world's largest river. A tough question has been where that river actually begins. Naming its source has evidently been difficult as centuries of efforts indicate. With technology and scholarship on hand why should deciding on the true source be so difficult? Various sites in Peru have been pinned as the source through the years. A study published online this month in the journal Area makes the case for Amazon's source to be the Mantaro River in southwestern Peru, even though the Apurímac River has been said since 1971 to be the source. Jane Lee of the National Geographic wrote on Thursday that, if accepted, the newer findings could affect measurements of the length of the Amazon River. That length is measured at about 4,000 miles by the U.S. Geological Survey. The discovery would add 47 to 57 miles to the Amazon's...