More Environment U.S. Stories

2017 Sees Hottest June on Record in Tucson

Average temperature of 89.7 degrees is the seventh hottest month on record.

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

Burro Fire Indicator of Extreme Dry Conditions, Official Says

Those celebrating Independence Day should be cautious due to abundance of dry fuels for wildfire.

Incoming Storm Could End Heat Wave

A storm system heading for Tucson means temperatures could get back to normal.

Fire Burns Buildings in Sonoita, Prompts Evacuations

The Encino Fire has burned 1,300 acres and eight buildings, according to fire officials.

Tributary Projects Aim to Improve Health of San Pedro River

Watershed work aims for increased flows and health of the undammed river.

Ozone Warning Issued as Temperatures Set to Exceed 110 Degrees

The weather system that is bringing the heat also prevents pollutants from leaving the air.

Heat and Ozone Levels Forecast to Rise in Tucson

Air pollutant could be at elevated levels through Friday; hot temperatures will last through the weekend.

Tucson Ranks Low in Public Park Availability

Trust for Public Land rankings show many Tucsonans do not have easy access to a park.

TEP Deal to Provide Solar Electricity for 21K Homes

The array, to be finished in 2019, will be the largest in TEP's renewable energy portfolio.

Grand Canyon Considers Thinning Bison Herd

Park officials worried about damage done by up to 600 bison in the park.

Next Step for Rosemont Mine Approval Could Come in June

Coronado National Forest supervisor expected to sign record of decision in June.

Avra Valley I-11 Proposals Draw Opposition at Tucson Meetings

Citizens disagree with notion of building highway through deserts west of Tucson.

Mulberry Fire Slows After Burning 1,755 acres

Fire started Saturday; authorities say it is human caused.

40,000-Acre Wildfire Slows, But More Winds Expected to Drive It Anew

Wind gusts to 35 mph coming in Thursday could spread Sawmill Fire near Sonoita.

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