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State: EPA decision to lower ozone standard a ‘major challenge’ for Arizona

The Environmental Protection Agency’s reduction of its limit for ground-level ozone will put an additional seven Arizona counties out of compliance and pose a significant challenge, an official said Friday.

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A young Sonoran desert tortoise. The U.S. Fish and Wildlife Service has removed the species from consideration for protection under the Endangered Species Act. (U.S. Fish and Wildlife Service Photo)

Feds remove Sonoran desert tortoise from consideration for protection

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