climate change

AP Photo/Matt York

Arizona Rep. Paul Gosar is touting his boycott of Pope Francis' address to Congress in a fundraising email.

The Republican represents the 4th District in the northwestern portion of the state. His email said that when the "Pope chooses to act and talk like a leftist politician, then he can expect to be treated like one."

Gosar boycotted the event in protest of the pontiff's expected focus on climate change in his speech.

Earth Notes: The Four Corners’ Methane Problem

Sep 30, 2015

The San Juan River Basin has a rich human history, visible in places like the ancient pueblo ruins of Chaco Canyon. But it is different relict of a much older history, rooted late in the Age of Dinosaurs, that is drawing attention to the basin these days: methane gas. 


The U.S. Bureau of Indian Affairs recently awarded the Navajo Nation $150,000 to support a project for students to learn about and adapt to climate change. Arizona Public Radio’s Justin Regan reports.

Brady Smith, U.S. Forest Service, Southwestern Region, Coconino National Forest

Current climate change models assume that trees recover swiftly after a drought ends. That’s not true, according to a new study.

Researchers examined tree-ring data from more than 1,300 sites around the world. By comparing the rings to rainfall records, they could track tree growth before, during, and after droughts.

They found most trees grow slower than normal for 1 to 4 years following a drought.

It’s called a “legacy effect,” and it hasn’t been included in climate change models.  


Some environmental and public-health groups are applauding President Obama’s Clean Power Plan designed to cut carbon dioxide emissions from U-S power plants. But some Arizona politicians say it’ll have a negative economic impact on the state. Arizona Public Radio’s Ryan Heinsius reports.

Melissa Sevigny

Honeybees have been in the news lately because they’re disappearing. They’re crucial to food production, but they’re not native to North America. Now some scientists are turning their attention to the importance and health of native pollinators. Researchers are using the elevation of the San Francisco Peaks to study how local insects might respond to a warming global climate.

A group of scientists is calling for a moratorium on the development of tar sands and oil shale in North America. The Colorado River Basin contains the largest untapped deposits of oil shale in the world.

More than 100 scientists have asked policy leaders to consider the potential global impacts of developing tar sands and oil shale. They say the carbon-intensive extraction process is incompatible with limiting climate change.

Thomas Sisk, an ecology professor at Northern Arizona University, is one of the lead authors.

Thousands of scientists worldwide are studying the environmental impact of climate change. But now, two professors of English are studying its emotional impact. SueEllen Campbell and John Calderazzo are co-directors of a climate change outreach and discussion group at Colorado State University. And, they recently visited Northern Arizona University to share this message about the Earth’s changing climate:

Much of the carbon dioxide released into the atmosphere from human activities — like burning fossil fuel — is taken up as plant food. Northern Arizona University’s Debbie Huntzinger, a researcher of climate change models, says the land’s surface is currently storing more of the greenhouse gas than it’s giving off. 

Northern Arizona University

In late September, the Intergovernmental Panel on Climate Change released its Summary for Policymakers for part-one of its  massive Fifth Assessment Report. Its message? Earth's climate is warming, and human influence on that warming is clear.