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Mexican wolf.

Study Warns Against Taking Endangered Mexican Wolf North of Historical Range

Researchers warn that going beyond range could threaten decades of conservation and recovery efforts.
An aerial view of UA Tech Parks off Rita Road and I-10. An area west of the site is planned for residential, retail and office development.

UA Tech Park to Mentor Companies in Solar Competition

Participants could win portion of $3 million. Will receive help from UA and other 'Connector' organizations.
Dense trees grow in a forest in northeastern Arizona.

Researcher Finds New Urgency for Climate Solution in Tree Recovery Lag

Professor David Breshears says trees are failing to keep up with frequency of droughts.
The largest island in the ring is the tourist mecca of Santorini (also known as Thira), while the other islands are Thirasia and Aspronisi. The three pieces are what remains after an enormous eruption destroyed most of a volcanic island. Courtesy of NASA Earth Observatory.

UA Tree-Ring Research Narrows Window for Massive Bronze Age Eruption

Newer methods helped close the gap on an ancient explosion that dimmed the sun across the Eastern Mediterranean.
Desert-adapted birds like the cactus wren, at left, have declined throughout the Mojave Desert, but not as much as other birds. Decreased rainfall because of climate change appears to be the culprit. On the right, a Costa's hummingbird.

Research Reveals Climate-Driven Bird Collapse in Mojave Desert

Deserts globally have borne the brunt of warming and drying over the past 50 years.
Researchers retrieve a fishing net from the Pacific Ocean in 2015.

Giant Strainer Seeks to Clean Up Oceanic Garbage Patches

An Arizona researcher says it's only one approach to an dire problem that requires a variety of mitigation strategies.
A changing climate is prolonging and intensifying heat waves, scientists say, driving wildfires.

Study: Droughts Are Growing Hotter Under Climate Change

Stressors may include environmental and social impacts of drought and heatwaves, driving more frequent wildfires, worsening air quality and stressing crops and livestock.
Monarch butterflies are among the most popular in Arizona and across the United States.

Nature Enthusiasts Help UA Researchers Tackle Butterfly Data

Volunteers' hobby turns into valuable citizen science from the field.
The sand spider, Homalonychus selenopoides, takes a dust bath after each molt.

The Secret Life of Spiders

Also on Arizona Spotlight: a new dust detection system on I-10; cumbia rhythm energizes downtown Tucson; and a story about the perils of being a king.

Arizona-based Solar Firm Draws Drinking Water From Air

Says Southwestern skies contain enough water vapor to provide private supply
Father and teenager daughter make dangerous trip from Guatemala to the Arizona border.

Separated & Reunited on the Border

Also on Arizona Spotlight: An update on the poaching of a male jaguar sighted in the Huachuca Mountains; meet Ciara Peterson, a Tucson girl who is a national champion at using braille.
Government officials received this picture of a jaguar pelt, and biologists say its spots correspond to those on a jaguar seen in pictures taken by a trail camera in Arizona.

Jaguar Seen in Arizona Last Year has Been Killed in Mexico

Spots on a pelt match those of a jaguar photographed in the Huachuca Mountains.
Hurricane Frances as seen from the International Space Station, 2004.

UA Forecasters Predict Fewer Hurricanes This Summer

Annual outlook cites ocean temperature changes for short-term dip in storm numbers.
Felisa is learning to cope with the communication disorder aphasia with her fellow group members at the Aphasia Center of Tucson.

Overcoming Aphasia: "A River is Made Drop by Drop"

Also on Arizona Spotlight: Where Arizona stands after a tumultuous week for U.S. border policy; and an alternative to sunscreen developed at the University of Arizona.
The lesser long-nosed bat.

Got Bats? Check Your Hummingbird Feeder

Volunteers needed to track two nectar-feeding flyers.
The bright sun sets behind some trees near Soleng Tom Elementary School on Tucson's east side.

Hot Weather Forecast Warms Up Urban Planning Research

UA team investigating solutions to daily buildup of city heat.

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