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The Central Arizona Project chose not to keep funding cloud seeding work in Colorado and Utah amid a broader fight over Colorado River water.
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Drought and climate change have cut deep into the Colorado River's reservoirs, and Arizona rains did little to boost Lake Powell and Lake Mead.
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Feds approve the state’s plan to regulate carbon capture projects
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Atrazine contamination is most widespread in the Midwest, but affected watersheds extend into Colorado and New Mexico.
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A team of researchers from the University of Arizona and U.S Geological Survey studied fossilized pollen from the site, and were able to study what the climate was like for those early humans on a timescale equivalent to a single generation, or around 50 years.
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Twenty firefighters have died so far this season, and hundreds of homes have been destroyed across the West.
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African antelope brought to New Mexico decades ago for hunting could eventually spread across much more of the West as climate change brings warmer winters, according to new research.
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New satellite observations show that some global river models struggle to account for dams, reservoirs and other human influences, raising questions about their reliability for water planning.
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Droughts and wet periods in major Western watersheds often happen together, according to new research that shows how water conditions in one area can be closely tied to those hundreds of miles away.
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New federal data shows a wide gap in the amount of carbon pollution produced by electricity generation across the West, reflecting stark differences in how states produce their power.
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Drought relief may only be temporary
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Paonia farmer Laura Parker describes how an unseasonably warm March and subsequent summer drought disrupted her seed-growing operation.