Hundreds protest planned border wall across the San Pedro River
Many are worried about how the proposed barrier would impact a vital waterway and wildlife migration corridor.
Opinions mixed on roll-out of new federal water rule
The Trump administration released its final rule Thursday redefining which waterways are protected under the Clean Water Act.
Climate change, and our response to it, is making life hard for desert tortoises
Tortoises are being hit with a one-two punch of energy projects springing up in a desert that is getting hotter and drier.
Communities affected by mining spill win case in Mexico's Supreme Court
The decision granted protection to Sonora River Valley residents seeking remediation following a 2014 Grupo México toxic mine spill.
TEP rate hike proposal draws opposition from climate advocates
Groups say TEP shouldn't keep investing in fossil fuels. The utility says the plan will enable a transition to more renewable energy.
Grijalva asks feds to 'respect tribal lands' during border construction
U.S. Rep. Raúl Grijalva is asking the Department of Homeland Security to formally consult with the Tohono O'odham Nation.
Planning for a future with less Colorado River water
A new book sheds light on mistakes of the past while Arizona gears up for the next round of negotiations.
The great white whale, sighted in Tucson!
Also on Arizona Spotlight: A conversation with ecologist Brad Lancaster; and the series "Youth Crossing Gender Borders" begins.
Feds say tiny snail in Utah, Arizona can no longer be listed as endangered
U.S. Fish and Wildlife says the Kanab ambersnail is not actually its own species.
Feds waived environment, other regs on 90 miles of state border in 2019
The waivers were aimed at streamlining wall construction on nearly one-quarter of Arizona's border with Mexico.
Conservationists: Mexican government failing to protect vaquita
They say Mexico has not been able to curb illegal fishing in the Sea of Cortez that threatens the nearly extinct porpoise.
Tucson offering drop-off recycling for your Christmas tree
Putting the Christmas tree on the curb won't get rid of it.
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.
Video shows groundwater pumping for border wall near Quitobaquito Springs
Conservationists worry pumping will harm a rare and critical desert water source.
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.
