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Nature and Environment

Alaskan tundra. A recent paper says preserving natural ecosystems, like tundra, is an important part of meeting climate goals.

Biodiversity Roadmap Calls For Conserving Ecosystems to Save the World

Apr 22, 2019 An author of the study says preservation is essential to meeting carbon goals and to stabilizing vital, interconnected systems.
An EPA map dated March 30, 2016 showing abandoned uranium mines on the Navajo Nation.

$220M Available to Small Businesses to Clean Up Navajo Uranium Mines

Apr 22, 2019 The funding comes from a $1.7 billion settlement from a company that mined the region.
Researchers are studying the the impact of elephant populations on grassland trees and vegetation.

UA Researchers Study Impact of Elephants on South African Landscapes

Apr 18, 2019 Elephant populations are prospering but causing problems for grassland tree and vegetation growth.
The late-afternoon sun on Lake Powell, April 2018.

Above-Average Snowpack Improves Colorado River Reservoir Levels

Apr 17, 2019 It's good news for Arizona water this year, but doesn't reverse nearly two decades of drought in the Colorado River Basin.
The Santa Rita Mountains in Southern Arizona is the proposed site of the future Rosemont Copper mining project.

Pima County Supervisors Back Lawsuit Over Rosemont Mine Approval

Apr 16, 2019 The suit claims approval of the mine project by the Army Corps of Engineers broke the law.
Looking out on Boulder Basin, Lake Mead.

Trump Signs Colorado River Drought Contingency Plan

Apr 16, 2019 The president announced his approval following a bipartisan effort to move it through Congress.
Visitors at Mather Point, at the South Rim of the Grand Canyon.

2 More Fatal Falls at Grand Canyon Follow Dozens of Others

Apr 15, 2019 Sixty-four fatal falls have been recorded in the park's history, many from someone going around a guardrail or accidentally driving off the rim.
Courtesy image adapted from part of an award-winning CAPLA project by UA graduate Kate Stuteville modeling sea-level rise.

UA Architecture Grads Forecast Future Effects of Climate Change

Apr 12, 2019 The projects were honored for designing innovative solutions for San Francisco Bay area.
Two decades after Hurricane Mitch, clean and safe water supplies are still a challenge in rural Honduras.

Drought, Mudslides Drive Central American Migrants North

Apr 12, 2019 Climate change impacts are exacerbating pre-existing crises that lead to out-migration, a Tucson-based journalist says.
Bordered by irrigation canals, restoration site Chausse is meant to replicate a bend in the Colorado River, with marshy areas and native vegetation.

In Colorado River’s Final Hundred Miles, Small Signs of Life Return

Apr 11, 2019 In recent years, the U.S. and Mexico have begun committing resources to restore portions of the final hundred miles of the dried-out delta.
A "Fire Traffic Only" sign during the 2017 Frye Fire in the Pinaleño Mountains.

Fire Danger Warnings Cover Much of Southern Half of Arizona

Apr 10, 2019 Tucson and Phoenix are included in the "red flag" warning areas.
Sunset at the Ciénega de Santa Clara in northern Mexico. The wetland is fed by salty runoff from American farms near Yuma, Arizona.

As the Colorado River Basin Dries, Can an Accidental Oasis Survive?

Apr 10, 2019 As the fate of the Colorado River's delta is in the hands of many groups, inadvertent wetland Ciénega de Santa Clara has an uncertain future.
The Colorado River's inability to reach the Pacific Ocean has become one of its defining characteristics, emblematic of the Southwest's reliance on the overallocated river system.

Five Years Later, Effects of Colorado River Pulse Flow Still Linger

Apr 9, 2019 While many effects were short-lived, it had a lasting impact on the imaginations of those connected to the river delta.
The sun peers through the clouds in Southern Arizona.

Tucson Temps Break 90 Degrees

Apr 8, 2019 The temperatures in Tucson will continue to rise Tuesday, as April opens the door to fire season.
Lake Mead outside Las Vegas, Nevada, serves as the Colorado River's largest reservoir and a key water source for Arizona, California, Nevada and Mexico.

Congress Passes Colorado River Drought Contingency Plan

Apr 8, 2019 The bipartisan bill passed with no opposition following two years of negotiations.
A file image of a canal carrying Colorado River water running past an agricultural field in Yuma.

Challenges Facing Arizona Farmers as Need to Conserve Water Intensifies

Apr 5, 2019 A discussion with UA Cooperative Extension's Jeff Silvertooth.

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