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There is one idea which would spend billions of additional dollars for personnel, equipment and barriers along the border with Mexico, but this is raising red flags for environmentalists.

Proposed Barriers Along Border Could Harm Wildlife

The issue has raised flags among environmentalists, who argue it could be devastating to the area's natural surroundings.
Visitors travel up and down Mt. Lemmon highway which leads to the top of this popular "sky island", one of many in Southern Arizona.

Mt. Lemmon Fees to Change Starting July 4

Recreation area will charge visitors in 11 individual sites instead of as a whole.
Items found with the body of an undocumented migrant, kept by the Pima County Office of the Medical Examiner.

Demographics Changing for Migrant Deaths in the Desert

Report shows more people from Central America crossing into the U.S.
the tenth anniversary of the Aspen Fire on Mt. Lemmon; what does the mountain look like now, how is it recovering, concerns for the future

Wildfire on Mount Lemmon Burns 200 Acres

Blaze possibly caused by lightning Sunday evening continues to grow on site of Aspen Fire of decade ago.
Sun

'Excessive Heat' Warning Remains in Effect in AZ

Temperatures to 116 Sunday, with limited outdoor activity advised; monsoon coming, but not soon enough.

60-Year-Old Desert Museum Keeps It Fresh

Mountain lion cub on exhibit after rescue from California
The Sonoran Institute is a non-profit organization whose mission is to "inspire and enable community decisions and public policies that respect the land and people of western North America."

Dwindling Waterways Draw Scientists

Sonoran Institute researchers working on issues, raising awareness
Here we have the exterior of Biosphere 2 which is illuminated by a beautiful, golden sunlight.

Focusing on Planet Earth

Biosphere 2, annual Earth Day raising awareness
The mission to collect samples from the asteroid 1999 RQ36 is scheduled to launch in 2016, and will return to earth in 2023.

UA Mission Will Touch Asteroid

Watch AZ illustrated Science tonight, 6:30, PBS 6
Adam Block, manager of the UA-operated Mount Lemmon Sky Center, talks about the PanStarrs Comet which he was able to photograph.

2013: Year of the Comet

Scientists are excited about astronomical opportunities
Water levels at the Colorado River basin.

AZ Week: Water Supply, Demand Assessed

Colorado River already overdrawn, but all parties acting with urgency
The monsoon made a big impact this week, and the wet weather was a welcome reprieve from our areas ongoing drought conditions.

2012: The Year in Tucson Weather

Last 12 months had average monsoon, tied for warmest summer ever
Elissa Fazio and other Hummingbird Monitoring Network volunteers are uncovering the secrets of hummingbirds.

Homing in on Hummingbirds

Licensed rehabilitator seeks volunteers
Olivier Guyon, University of Arizona physicist and astronomer, winner of a MacArthur 'genius grant.'

UA Scientist Wins 'Genius' Grant

MacArthur Foundation awards physicist Olivier Guyon $500K
The monsoon made a big impact this week, and the wet weather was a welcome reprieve from our areas ongoing drought conditions.

Strong Monsoon May Linger, Expert Says

So far, this year’s summer rains have delivered record-breaking amounts -- but will they last?
NASA's Mars Curiosity Rover.

Minding Mars from Tucson

Scientists around world pay close attention to NASA mission

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