Before revision: The WWF's list featured the Danube, the Rio Grande , and the Nile amongst others, stating that these "once great rivers" are in danger and "can no longer be assured of reaching the sea unhindered".
After revision: The WWF's list featured the Danube, the Nile , and the Rio Grande amongst others, stating that these "once great rivers" are in danger and "can no longer be assured of reaching the sea unhindered".