U.S. officials who are hoping to strengthen some international environmental treaties are watching a fishing conference in Spain very closely, where diplomats are trying to crack down on nations that are ignoring the treaty protecting the giant bluefin tuna. The numbers of bluefin tuna have been reduced by ninety percent since the 1970's, mostly due to overfishing by fleets from Asia, Europe, and the Americas. The debates over the treaty could have far-reaching implications for other international wildlife protection agreements. NPR's John Nielsen reports.
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