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Tribal advocates keep up legal pressure for fair political maps; 12-member jury sworn in for Trump's historic criminal trial; the importance of healthcare decision planning; and a debt dilemma: poll shows how many people wrestle with college costs.

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Civil rights activists say a court ruling could end the right to protest in three southern states, a federal judge lets January 6th lawsuits proceed against former President Trump, and police arrest dozens at a Columbia University Gaza protest.

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Rural Wyoming needs more vocational teachers to sustain its workforce pipeline, Ohio environmental advocates fear harm from a proposal to open 40-thousand forest acres to fracking and rural communities build bike trail systems to promote nature, boost the economy.

Hydrologist Says Climate Change Threatening Endangered Fish In Nevada

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Tuesday, September 2, 2014   

LAS VEGAS - Climate change is being blamed for the sharp decline in the population of the nearly-extinct Devils Hole pupfish, which exists only in one small area of southern Nevada east of Death Valley National Park.

Hydrologist Mark Hausner at the Desert Research Institute has done extensive studies on the minnow-sized fish. He says warming water temperatures have shortened the fish's reproduction cycle by at least a week.

"Pupfish eggs need relatively cooler water," says Hausner. "If the water gets warmer than that, then the fish don't develop. The fish hatch early, so it's essentially like a premature baby, and they're unlikely to survive to adulthood."

Hausner says the pupfish live in a single water-filled cavern at Ash Meadows National Wildlife Refuge, which is managed by Death Valley National Park. He says there are estimates fewer than 100 of the pupfish remain in existence.

Hausner notes the National Park Service may provide additional shading in hopes of cooling the cavern's waters and extending the reproduction cycle of the fish, but he warns that warming waters due to climate change are likely to impact the life cycles of other fish living in arid climates.

"What we're seeing in Devils Hole is something that we expect to see further on into the future in these other springs, and in a number of different desert aquatic ecosystems throughout the world," says Hausner. "The desert areas are among the areas that are really expected to be hit hardest by climate change."

The Devils Hole pupfish has been listed as an endangered species since 1967.


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