Nature and Environment

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.

A look at the surface of the ocean at Biosphere 2. March 2019

Modeling Ocean Recovery at Biosphere 2

Apr 5, 2019 Scientists at the facility are beginning an experiment to fix the facility's ocean as a model to help corals on a global scale.

A recent Arizona Game and Fish Department event spotlighting endangered black-footed ferrets found only four of the animals.

Endangered Black-Footed Ferret Count Falls Short of Agency Hopes

Apr 5, 2019 A recent Arizona Game and Fish spotlight event found only four ferrets in the wild.

Boulder Basin at Lake Mead.

Arizona Members of Congress Introduce Legislation to Finalize Drought Plan

Apr 3, 2019 The DCP Authorization Act outlines how states propose to manage water from the Colorado River in the future.

Navajo National Vice President Myron Lizer and President Jonathan Nez hold up the Navajo Sunrise Proclamation in Window Rock, the tribe's capital, on April 2, 2019.

Navajo Nation President Proclaims Renewable Energy Top Priority

Apr 3, 2019 The proclamation comes days after the tribal council voted to drop its bid for the West's largest coal-fired power plant.

Bison near the Grand Canyon, alongside Highway 67. Bison are on the list on animal carcasses requested of Arizona Game and Fish.

Agency Collecting Animals Killed by Cars, Poachers for Tribes

Apr 1, 2019 The state's wildlife agency is helping Native American tribes looking for animal parts for cultural and religious use.

Mexican wolf.

Study Confirms Mexican Wolf Status, Changes Red Wolf Classification

Apr 1, 2019 The study recommends maintaining the wolf's endangered subspecies status, which it may be stripped of.

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