On the thawing tundra, researchers race to understand black carbon’s climate impact

On a morning in September 2015, sterile, gray Arctic light filtered through a blanket of woolly clouds as Matt Gunsch and Tate Barrett parked their rented pickup truck on a dirt road and clomped in rubber boots down a long, icy boardwalk to their air-monitoring laboratory on the tundra.

From the outside, the lab looked unglamorous — a dingy, white shack perched on a metal frame in a meadow speckled with snow and grass stubble. It felt distinctly like the middle of nowhere — though it was just a couple of miles beyond the main streets of Utqiaġvik, Alaska, the...

UNT research team analyzing effectiveness of trees

It may not be long before residents of Dallas, Denton, Tarrant and surrounding counties feel the vicious heat of summer and, on certain days, hazy conditions caused by particle pollution in the air. When particulate matter levels in the air are high, anyone sensitive to them may need to limit time spent outdoors, particularly outdoor exercise.

Planting trees in certain urban areas may improve air quality because the trees’ leaves and branches in summer foliage become “urban air filters,” according to Alexandra Ponette-González, University of North Texas assistant professor of geography and the environment.


Fresh water at Puerto Williams in southern Chile is the world's purest, study finds

Sat, Dec 26, 2015 - 8:00am

A new scientific study reaches the conclusion that the fresh water found in the town of Puerto Williams in southern Chile's Magallanes region is the purest in the world, the University of Magallanes said.

Researchers from the University of Magallanes and the University of North Texas in the United States took samples over 10 days from a number of rivers and other sources of fresh water in the area.

"Our results confirm that these waters are clean, the cleanest on this planet," the University of North Texas scientist Guido Verbeck said.

"The instruments we used to study the samples can detect two parts of...