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A time lapse photograph of light pollution from Tucson reaching the Picacho Peak night sky.

AZ Bill Would Prohibit Local Gov Energy Efficiency Mandates

Some astronomers say it could affect efforts to protect dark skies as it would block government from requiring low-intensity outside lighting.

Rosemont Mine proposed site in the Santa Rita Mountains

Rosemont Mine Formal Objection Period Nearing Its Close

Public can weigh in on proposed mine until Feb. 14, ending a 45-day period for response to Coronado National Forest's environmental impact statement.

Game & Fish: 2 One-Month-Old Bighorn Lambs Alive in Catalinas

Arizona's efforts to re-establish desert bighorn sheep has had rough beginning, now comes an optimistic sign for herd.

Water levels at the Colorado River Basin.

CO River Relatively Young in Geological Time, Scientists Say

Arizona Geologists discuss fascination with origins, evolution of state's most famous river, water source.

Game & Fish Confirms Death of 10th Bighorn Sheep

31 of them released into Santa Catalina Mountains in Nov.; awe's cause of death being investigated, officials say.

This Alligator Gar is just one of the many unique and strange marine animals that Zeb Hogan has encountered in his work as a ecologist.

Former UA Biology Student Aims to Conserve Freshwater Fish

Zeb Hogan, now host of "Monster Fish" on National Geographic Channel, explores rivers all around the world.

Another Bighorn Sheep Dead, Game & Fish Says

Dept. announces Friday animal may have been killed bobcat or young mountain lion; brings total of deaths to 9.

Federal Land Payment Elimination Costs Pima County $3M

County provides services on U.S. owned land, but isn't getting reimbursed for cost of services.

We learn about Arizona's rich geological history with Senior Geologist at the Arizona Geological Survey, Jon Spencer, Ph.D.

AZ Landscape As Old As 30 Million Years, Geologist Says

The geology of Arizona has changed dramatically over time; state geologist discusses details.

Mexican Gray Wolf Population Rising in AZ, NM Border

Endangered species now up to 83 living in mountains along Arizona-New Mexico border; an increase of 10% since 2012.

We learn about Arizona's ancient volcanos with Senior Geologist at the Arizona Geological Survey Jon Spencer, Ph.D.

Remnants of Volcanoes Across AZ, Geologist Says

In Arizona's geologic history, there have been several major periods of volcanic activity, last one between 15-30 million years ago.

Disease Drives Shrimp Prices; UA Researcher Seeks Solution

Syndrome kills species when young, causing entire crops to be lost; scientist finds way to detect it early on.

Traffickers Blamed for Deforestation in Central America

AZ scientists working in Guatemala, Honduras discovers forest slashing for clandestine landing strips, roads.

EPA Proposes Pollution Control for 6 AZ Facilities

Federal plan to limit emission such as nitrogen oxides, sulfur dioxide; agency holding public hearing Feb. 25 in PHX, Feb. 26 in Tucson.

January 2014 May Be Third Hottest in Tucson History

Daytime temperatures have been on average above 70; UA meteorologist says due to a "blocked weather pattern."

Living Streets Alliance is an organization in Tucson that is looking at ways of making the community less automobile-oriented and more suitable for those who prefer to engage in walking, bicycling, socializing and play.

City, Local Group Work to Promote Walking, Bicycling, Green Activities

Nonprofit organization making streets less-automobile oriented; city planning on Tucson's first parklet.

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