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Site of the proposed Rosemont copper mine, looking west from Highway 83.

Environmental Group Sues Federal Agencies Over Rosemont Copper Approval

Center for Biological Diversity claims US Fish and Wildlife Service did not fully consider impact on endangered species and water.
A "Fire Traffic Only" sign during the 2017 Frye Fire in the Pinaleño Mountains.

Arizona Public Lands Less Likely to Burn in Wildfires Than Many Western States

Federal and state public land has similar percentage of acreage deemed at "high risk" of burning.
Crews work to clear Wet Canyon on Mount Graham. The canyon was overrun with debris and sediment when multiple storms brought heavy rainfall to areas that were severely burned during the Frye Fire.

USGS: Wildfire-Caused Erosion Endangers Western Watersheds

Denuded landscapes allow sediment to soak up or contaminate run-off.
A man rests in the shade on a hot day in Tucson.

Dry, Hot August Follows Record-Setting July Rain

Weather Service meteorologist says storms become less frequent in September, unless a large Pacific storm hits.
A fire tower burned by the Frye Fire in 2017.

Looking Back on Fire Season in Arizona, and Places Touched by the Flames

Wildfire activity rose statewide, and Southern Arizona was home to some of the state's largest fires.
George Gunter (left) and Rahul Bhadani (right) show the data from a more advanced sensor attached to the roof of the "cognitive and autonomous test vehicle." The goal of their project was to get similarly accurate data with a sensor that records less data.

Learning to Program a Driverless Car at the UA

A 10-week summer course meant to encourage students to continue studies in research-based graduate programs.
Looking up at Seven Falls, in the Sabino Canyon Recreation Area.

Rescues Highlight Danger of Flash Floods in Catalina Mountains

Multiple helicopter rescues have taken place during recent weekends when floods stranded visitors.
Ironwood Forest National Monument

Advocate Group 'Cautiously Optimistic' About Arizona Monument

Ironwood Forest National Monument's supporters are trying to preserve the protected area.
A lightning strike over east Tucson.

Tucson Sets July Rainfall Record, 2nd-Highest Monthly Total

July's rain total was higher than average rainfall for an entire summer rain season.
Pima County Wastewater Reclamation Department Research and Innovation Manager Jeff Prevatt examines water after it has come through the county's new water purification truck.

Mobile Unit Looks to Fight Treated Wastewater's 'Yuck' Reputation

Facility fits in a commercial truck trailer, and will be used as a public exhibit to build confidence in reclaimed drinking water.
A lightning strike over east Tucson.

Monsoon Brings Danger of Flash Flooding to Arizona

Meteorologist: Deadly event near Payson is an example of flash-flood dangers.
Grand Canyon National Park is one of the most visited national parks in the nation.

Parks Raising Price of Lifetime Pass for Seniors

The National Parks service will increase the fee from $10 to $80 in August.
Looking through a window of a truck at a firefighter watching the Burro Fire.

Containment a Struggle on Burro Fire

Fire managers state need to be thorough and cautious before declaring containment, now at 11 percent.
Smoke from the Burro Fire wildfire, July 1.

Burro Fire Grows, Helped by Rugged Terrain, Weather

Similar conditions allowed fire to grow by 9,000 acres Sunday.
The highest temperature ever recorded in Tucson was 117 degrees, in 1990.

2017 Sees Hottest June on Record in Tucson

Average temperature of 89.7 degrees is the seventh hottest month on record.
Smoke from the Burro Fire wildfire, July 1.

Burro Fire Grows to 14,000 Acres, Prompts Closures and Evacuations

Flames were fanned by a storm system moving into the area, causing rapid growth on Sunday

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