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Researchers Ben Stinnett, left, Melanie Tluczek and Brenton Scott send the drone on its way.

Researchers using drones to track the spread of buffelgrass, an invasive species originally from Africa that poses a threat to desert wildlife. “It spreads fast, it’s a fire hazard, it steals the water that the native plants need and it can create a monoculture, capable of really changing our Sonoran Desert ecosystem,” said Sandy Bahr of the Sierra Club. Read more»

Arizona State scientists are studying CO2 gasses and air-capture technology at the Center for Negative Carbon Emissions.

Scientists at ASU are developing new technology capable of capturing excess carbon dioxide from the atmosphere, a task they believe is paramount to current efforts to reduce emissions. Read more»

Severe drought affecting many parts of the nation is convincing skeptics of global warming to reconsider their position on the matter. For the first time since 2008, 7 out of 10 Americans indicate that there is solid evidence of global warming. Read more»

The pristine waters of Fossil Creek, long an attraction for hikers, are in jeopardy from overuse.

Overwhelming crowds have caused Forest Rangers to enact an online reservation system to mitigate the safety hazards and environmental impact of heavy visitation at Fossil Creek. Read more»

The roundtail chub, whose dwindling range includes rivers in Arizona, would receive threatened status under the Endangered Species Act under a proposal by the U.S. Fish and Wildlife Service.

Fish and Wildlife Service proposed Tuesday listing two small species of Southwest fish as threatened under the Endangered Species Act. The proposal follows pressure from the Center for Biological Diversity, whose legal agreement with the federal agency hastened the designation of hundreds of imperiled species. Read more»

A lot would have to happen before a commuter rail line passes through Queen Creek, but Mayor Gail Barney sees great potential in the idea. Read more»

The state has filed a motion to involve itself in a lawsuit in which environmental groups allege that federal officials are failing to abide by the Endangered Species Act and environmental and administrative laws in a recovery plan for Mexican gray wolves. Read more»

Sediment spilled from a mine colors the Animas River in Durango, Colorado, on Aug. 6.

Citing the release of millions of gallons of toxic wastewater into a southwestern Colorado river earlier this month, a coalition of conservation groups, two Native American tribes and two county governments in Arizona petitioned federal agencies Tuesday to tighten mining regulation on public lands. Read more»