Scientists are fighting to save the ‘blue heart’ of Europe
By Nell Lewis, CNN Bosnia and Herzegovina (CNN) — The Neretva River carves its way through Bosnia and Herzegovina’s impenetrable forest. A mesmerizing blue-green, it runs 140 miles (225 kilometers) from deep within the Dinaric Alps to the Adriatic Sea – at some points disappearing into subterranean channels before re-emerging in bubbling springs. One of the coldest rivers
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