Grand Canyon faces clash over salvation plan
The Grand Canyon, damaged by Glen Canyon Dam effects, faces a divided panel and competing interests as scientists race to save native species and shoreline. Four of eight native fish are gone, the humpback chub remains endangered, and cooling flows threaten reproduction amid legal and political pressure. A retreat aims to realign objectives to avoid lawsuits and dictated outcomes.
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Mars rover Spirit finds salt hinting at past water
NASA's Spirit rover dug a trench in Gusev Crater and detected concentrated salt below the surface, signaling ancient water activity. Cornell's Steve Squyres calls the result more compelling than prior finds, aligning with Opportunity's earlier evidence of water in rock and evaporated minerals.
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