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Resource Crunch: Why Many Things Cost Much More

By Tom Randall and Eric Roston - 2012-02-06T18:24:40Z

Photograph by Emilio Morenatti/AP Photo

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Peak Tuna--Sushi Endangers Atlantic Bluefin Species

Sushi eaters have over-indulged in one of the world's most delicious resources. The numbers of Atlantic bluefin tuna, Japan's most prized catch, have passed their peak, decimated by a global craze over the delicate slices of crimson flesh. Some environmentalists want it designated as endangered.

Once-thriving populations have been over-fished to less than 10 percent of their former populations in some regions. The plight of the species has done little to curb demand; a Japanese sushi chain spent a record $730,000 for a single fish this year.

International quotas are ignored each year. The tuna trade has declined since its 2007 peak, but not fast enough, according to the Pew Environment Group. In 2010, bluefin sales were more than double the set limit.

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