article_snippet.sent: But some scientists are concerned about silver building up in river basins, as well as legal uncertainties over who should get the additional water.
article_snippet.sent: Some scientists are concerned about silver building up in river basins, as well as legal uncertainties over who should get the additional water.
highlights_snippet.sent: Some scientists are concerned about silver building up in river basins .
  
highlights_snippet.sent: There are also legal uncertainties over who should get additional water .