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Looking upstream Sabino Creek on one of the bridges at the popular recreation site in Tucson in early winter.

Proposed Clean Water Act changes will mean uncertainty, loss of protections for Arizona waterways

The Trump administration is implementing a new rule defining which waterways are regulated under the act.
A video shot by wildlife biologist Rosemary Schiano of groundwater drilling near border wall construction close to Quitobaquito Springs on Dec. 16, 2019.

Video shows groundwater pumping for border wall near Quitobaquito Springs

Conservationists worry pumping will harm a rare and critical desert water source.
The midnight sun casts a golden glow on an iceberg and its reflection in Disko Bay, Greenland. Much of Greenland’s annual mass loss occurs through calving of icebergs such as this.

Greenland ice melt matches UN panel's worst predictions

New research suggests ice loss in Greenland has contributed just over a centimeter of mean sea level rise over 26 years.
Lake Mead outside of Las Vegas.

Interior secretary announces study impacting Colorado River water talks

States are set to begin negotiations next year over a new set of agreements about the river's future.
Vertical farmed plants are fed with liquid nutrients instead of soil.

Scientists consider vertical farming ahead of changing climate

A UA researcher says the technique could help solve future food concerns.
A view of the Rio Sonora valley from a hillside in Baviácora, Sonora, on July 30, 2019.

Report: Tailings dam poses threat to Rio Sonora valley 5 years after major spill

The report's author says Grupo México's new tailings pond threatens the health and livelihood of people already impacted by a 2014 spill.
More than 80 small fishing boats illegally cast nets into the Sea of Cortez in an area inhabited by the vaquita marina porpoise on Dec. 8, 2019.

Poachers swarm vaquita refuge ‘like never before’

A conservationist said the number of poachers in the endangered porpoise's habitat — casting nets for a fish called the totoaba — is unprecedented.
The Tortolita Preserve in Marana, Dec. 10, 2019.

Marana's Tortolita Preserve protected from development, for now

The town will continue making lease payments on the 2,400-acre wildlife preserve.
University of Arizona sophomore Kyle Kline speaks to a crowd gathered at a climate strike protest at El Presidio Park in Tucson on Sept. 20, 2019.

Tucson youth will hold another climate strike Friday

Students will take to the streets once again to demand action on climate change.
John Waters tours each year to bring "A John Waters Christmas" to his fans.

Celebrate Christmas the John Waters way.

Also on Arizona Spotlight: "The 89-90 Trip" spends a day in Yellowstone National Park; and the legacy of ecologist Aldo Leopold.
U.S. Rep. Raul Grijalva speaks the the Pima County Democratic Party election night event, Nov. 6, 2018.

Rep. Grijalva attends UN climate change summit

A dozen House Democrats are in Madrid for an international climate change meeting this week.
Oak Flat, east of Superior, Arizona. A company proposes to build one of the world's largest underground copper mines at this location.

Former San Carlos Apache Tribe chair walking to traditional lands to protest copper mine

Wendsler Nosie Sr. is going to live near Oak Flat east of Phoenix to oppose the construction of the Resolution Copper Mine.
A Sonoran Desert bee (genus Melissodes) identified by The Tucson Bee Collaborative, photographed by Bruce D. Taubert.

How to ID a Bee.

Also on Arizona Spotlight: A closer look at how Tucson neighborhoods voted in the last local election; The 89-90 Trip: Day Three begins in Panguitch, Utah; and "Tilly the Trickster" at the Live Theatre Workshop.
Central Arizona Project water flows in a canal near Marana.

East side development renews concerns about water and growth

Members of the City Council say it's time for the state to pitch in with CAP water.
A canal carries Colorado River water to farmland near Poston, Arizona, owned and operated by the Colorado River Indian Tribes, a key player in Arizona's Drought Contingency Plan.

Historically left out, Colorado River tribes call for more sway in Western water talks

With the drought plan done, some tribal leaders say their water rights can’t be ignored any longer.
The flight line at Davis-Monthan Air Force Base.

Study: Arizona military base will be hardest hit by climate change

Bases in the state could see an increasing number of dangerously hot days, the study says.

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