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Ectomycorrhizal fungi (the mushrooms connected to the roots of the tree) increase the uptake of nitrogen by the plant, even when that nutrient is scarce in soils. Arbuscular mycorrhizal fungi (associated with the grass roots on the left) do not provide that advantage to their host.

Fungus Helps Plants Soak Up Carbon Dioxide

Flagstaff ecologist's work shows plants can thrive without nitrogen

Roberta Diaz Brinton, PhD

UA Alzheimer's Research Looks at Aging Female Brain

Scientist considers reproductive milestones as triggers

Hopi Katsina friend.

Legislation Would Stiffen Penalty For Export Of Sacred Native American Artifacts

Congressional action could double jail time for trafficking offenses.

Caleb Stewart, a third year student at the University of Arizona

Racial Divide in Country Inspires UA Student to Act

A multi-racial group organizing a human rights rally on the UA campus.

An Arizona home.

June Was a Strong Month For 'Move-Up' Homebuyers in Tucson

Monthly sales numbers show formerly underwater buyers may again be able to move.

Ruling: Smell of Marijuana Justifies Police Search

Arizona Supreme Court Sides With State on Probable Cause Question.

Scientists study the effects of aging on the brain.

UA Researchers Focus on Healthy Aging Brain

Dementia, Alzheimer's are not inevitable.

In Wake of Dallas Police Killings - Tucson Police Working with the Community

Tucson Police one of 15 police departments in the country selected for new policing strategies

The Grand Canyon in northern Arizona.

Grand Canyon Trust Creates Plan for Climate Change

'Southwest right in climate crosshairs ... a hotspot of projected change,' official says.

Easing the Financial Burden of Staying Cool

Fund with contributions from state's utilities helps low-income residents pay bills.

Marijuana is an ingredient in these edible and topical products from Halo Infusions & Extractions in Tucson.

Debate Over Recreational Marijuana Comes to the Fore

Initiative aimed at legalization in Arizona proposed for November election ballot.

Legalized Marijuana, 2 Other Ballot Propositions Filed

Petitions turned in for higher minimum wage, limit on hospital executive compensation.

Eloy Detention Center

Immigrants Get Poor Health Care, Rights Group Claims

Eloy Detention Center focus of report on treatment of man who died.

I-11 Impact Weighed as Environmental Studies Begin

Mexico-to-Canada route, running through Southern Arizona, has detractors.

Architect's rendering of the new Banner - University Medical Center tower.

US Awards UA, Banner Health $43M for Research

Grant is part of President Barack Obama's Precision Medicine Initiative.

One of the closed TUSD schools sits with empty hallways.

TUSD Seeks to Lease or Sell Closed Schools

Nearly 20 shut down in last six years, with several still sitting unused.

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