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Republicans and Democrats agree on climate change — they just don't realize it

Reposted from the University of California newsroom

Just how far apart are Republicans and Democrats when it comes to views on climate change? Not all that far, as it turns out. They're just too party-focused to notice. 

three researchers
Left to right, David Sherman, Phil Ehret and Leaf Van Boven
Credit: Sarah Anderson

That's according to scientists from UC Santa Barbara and the University of Colorado Boulder in new research just published in the journal Perspectives on Psychological Science.

Surveying 2,000 adults, the research team found that, across party lines, there is general agreement that climate change is real, that it is caused by human activity and that something should be done to mitigate it.

The study further reveals that people are more likely to support the same climate policy proposal when they think that their own political party supports it — and that both Democrats and Republicans overestimate how much their peers oppose the ideas of the other party.

“Democratic and Republican citizens alike evaluate a carbon tax or cap and trade policy based on who proposed it — above and beyond their thoughts on the details of the policy, or on whether it is consistent with their beliefs about the importance of climate change,” said David Sherman, a UC Santa Barbara professor of psychological and brain sciences and senior author on the paper. “They do this despite stating themselves that policy considerations should be more important than partisanship.”

Added lead author Leaf Van Boven, a psychology and neuroscience professor at CU Boulder, “We found that people routinely place party over policy and disagree for the sake of disagreeing.” 

Disagreeing for the sake of disagreement

For their project, Sherman, Van Boven and Phil Ehret, who just completed his Ph.D. in social psychology at UC Santa Barbara, set out to explore the psychological reasons that — despite warnings about economic, social and humanitarian impacts of climate change — U.S. lawmakers have yet to enact a national policy.

Previous studies and conventional wisdom suggested this was primarily because most Republicans are skeptical of climate change.

So the researchers conducted two studies in 2014 and 2016 with diverse national panels of over 2,000 U.S. adults, asking: Is climate change happening? Does it pose a risk to humans? Is human activity responsible? And can reducing greenhouse gas emissions reduce climate change?

Sixty-six percent of Republicans, 74 percent of Independents and 90 percent of Democrats said they believed in human-caused climate change and the utility of reducing greenhouse gases.

“Just before the presidential election when most Republicans were voting for Trump, who characterized climate change as a ‘hoax,' they nevertheless expressed a belief in climate change,” noted Van Boven.

Policy is nearly irrelevant

As part of the 2014 study, the researchers showed participants one of two proposed policies. One was a cap-and-trade policy that historically has been championed by Democrats. The other was a revenue-neutral carbon tax based on policies recently advocated by Republicans. Participants were told that 95 percent of Republicans and 10 percent of Democrats supported the policy, or vice versa. 

Regardless of the content, Democrats supported policies from Democrats more strongly, and Republicans supported policies from Republicans more strongly. “If you want to know who will support a climate policy, just look at which political party supports it,” Ehret said. “Climate change belief alone is not the whole story.”

In a related study of 500 people, co-authored by the same researchers and published in Social Psychological and Personality Science, the authors used actual language from a proposed climate change policy that was part of ballot initiative I-732 in Washington State in 2016.

The researchers highlighted either Democrats or Republicans who genuinely supported or opposed the policy to the study volunteers and found similar results.

“What is more, people anticipate that others, their fellow Republican and Democratic citizens will be even more polarized and influenced by political party than they actually are,” Sherman said. “This creates a false norm of consensus and unanimity within each party that, for example, other Republicans will reject any policy proposed by Democrats. This perception of within-party unanimity makes it very difficult to cross party lines.”

In a unique contribution of their paper, the researchers also interviewed four retired members of Congress who have worked on environmental issues: Mickey Edwards, R-Okla., Robert Inglis, R-S.C., David Skaggs, D-Colo., and Tim Wirth, D-Colo. All four reported that as climate change became closely associated with Democrats, Republican disagreement increased.

“If you were interested in supporting climate change, that meant you were interested in supporting Al Gore,” Wirth told the researchers. In his interview, Edwards said, “Nobody wants to be an outlier — nobody.” 

This distrust of the other side, combined with a false assumption that the two parties sharply disagree has made it difficult for good, bipartisan ideas to gain traction, according to the researchers.

“One of the foundational insights of social psychology is the under-appreciated influence of social norms and that actions are determined more by perceptions of norms than the actual norms,” Sherman said. “It is crucially important for lawmakers and voters alike to be informed about what others actually think about environmental issues such as climate change.

“There are many reasons the media focuses on differences between partisans,” he added, “but our work shows why it is important to highlight this strong consensus as well as the even stronger consensus that citizens should evaluate policies on their details and impact and ability to address problems, and not based on which party proposes them.”

Posted on Sunday, July 22, 2018 at 12:12 PM
  • Author: Shelly Leachman

Q&A: Gilless reflects on CNR

Reposted from UCANR News

After 11 years leading the College of Natural Resources at UC Berkeley, Dean J. Keith Gilless stepped down from his post in June. As dean, Gilless has been dedicated to supporting CNR's diverse research, teaching and outreach activities. He has led the college through major growth, launched a number of interdisciplinary initiatives and tackled infrastructure-renewal projects. After completing his second term, Gilless—who has been a professor of forest economics at Berkeley since 1983—will continue to teach, conduct research and serve as the chair of the California Board of Forestry and Fire Protection. 

Keith Gilless talks with students in the Beahrs Environmental Leadership Program. Photo by Jim Block

Looking back on the past 11 years, what are your proudest moments?

The entire CNR community has a lot to feel proud about. We've doubled the number of undergraduates in the College by responding to students' intellectual and career interests and creating a strong culture of advising and student support. Despite budget constraints, we found ways to create two new cross-campus centers: the Berkeley Food Institute and the Institute for Parks, People, and Biodiversity. We launched the Master of Development Practice program. We became more successful and sophisticated in our fundraising efforts, allowing us to increase graduate student support and make some much-needed improvements to our infrastructure. We expanded our network of research forests at a pivotal time for understanding the effects of climate change on California's ecosystems. And we've been a major contributor to campus-wide initiatives in biofuels and gene editing. 

Beyond this long list, what makes me proudest is that UC Berkeley has come to recognize CNR as one of its most successful and dynamic centers of excellence. Our college embodies the relevance in modern society of the vision that created the land-grant universities. We share the mission of Berkeley —and of public education generally—to serve society through problem-solving research and discovery, instruction that enables students to realize their potential, and public service. Here, we really do aspire to “See the bigger picture and make a better world.”

Favorite memory of being dean?

That's easy: congratulating students at commencement. Education transforms lives. My own education—and my participation in the research and educational mission of  UC Berkeley—transformed my life and my understanding of society and the environment around me. Berkeley students are overwhelmingly the first or second generation in their family to attend college. When they cross the stage in cap and gown, and their families and other loved ones applaud and cry, I feel privileged to have been allowed to be a part of their joy on that day.

What are the needs and opportunities you see for the College going forward?

Continued success for CNR depends on our ability to continue to grow our philanthropic base. Success here will help us to improve our facilities, fund cutting-edge research, and achieve strong financial support for our graduate students. We must also ensure that all members of our community feel they are heard, valued, and respected. I firmly believe that we can meet these challenges, in part because what we do is so directly relevant to many of the difficult problems facing our world—these are problems people want to solve. Complex issues require interdisciplinary solutions, and that's something at which this College excels.

CNR doesn't exist in a vacuum. Our fate is inextricably tied to the fate of the campus, and the fate of public education. No single unit can succeed without collaborating across administrative boundaries—and without the campus successfully addressing its financial challenges with respect to aging infrastructure, accessibility, and housing, among other issues. CNR needs to help Berkeley thrive in order to thrive itself.

Any other thoughts? 

I've been part of the Berkeley and CNR community for 35 years and have enjoyed it all. I never cease to be amazed at the opportunities to interact with brilliant and inquisitive students; faculty colleagues who set the bar for excellence in research, teaching, and service; and dedicated staff who keep the College running no matter how difficult things get. I have never known what to expect at each new stage in my career here, other than that I would find myself working with people who inspire me to try harder to do a good job. As I change my business card back to reading simply “Professor of Forest Economics,” I know this feeling will continue. 


Posted on Thursday, July 5, 2018 at 12:14 PM
  • Author: Julie Gipple

Berkeley Forests: New Future for UC Center for Forestry & Center for Fire Research & Outreach

The Center for Forestry and Center for Fire Research and Outreach are merging to become Berkeley Forests!

As we all know, forests and fire are inextricably linked in California. Historically, both Centers have carried out research, outreach, and education on human interactions with California ecosystems. Combining the Centers under one roof will facilitate the work of our co-directors, Dr. Scott Stephens and Dr. William Stewart, our Berkeley Forests staff, and management of our new research forest, Grouse Ridge.

To this end, we are proud to release our new website at The new website features easy to access information about our forests, fire resources, information on current research, our long-term datasets for our forests, and more.

With these changes, we will also be hiring a new Policy Analyst (located at the Berkeley campus). We seek someone with experience in and knowledge of forests, fire, grant writing, social media, website work, and GIS/data analysis. An official position will be released shortly on the Berkeley jobs website, but please make sure to follow us on social media or email one of or co-directors so you don't miss it!

We're also merging all our social media pages! The Center for Forestry and Center for Fire facebook pages will be closed and transition to the Blodgett Forest Research Station page to become Blodgett Research Station at Berkeley Forests. Please like us at our new home if you have not done so already! 

On twitter, the @ucforestcenter page will be closed, and the @ucfirecenter page will become @berkeleyforests. If you are only on the @ucforestcenter, please make sure to change your follow to @berkeleyforests!

If you have questions or concerns, please contact Berkeley Forests' co-directors at or

Posted on Wednesday, June 13, 2018 at 10:39 AM
  • Author: Carlin Starrs

Trauma and resilience in California disaster response and readiness

Reposted from the Confluence, blog of the California Water Resources Institute

California National Guard members wade through mud to people trapped inside a Montecito home. Air National Guard photo by Senior Airman C. Housman.

 Maryam Kia-Keating, Ph.D. is an Associate Professor of Clinical Psychology at UC Santa Barbara and a Licensed Clinical Psychologist. Her work focuses on coping and resilience in the context of adverse childhood experiences, trauma, and stress, particularly for vulnerable and understudied populations. She is on Twitter @drkiakeating.

You have done research related to resilience and trauma in the wake of disasters in California. What have you learned?

It's important to pay attention to the psychological impact of disasters. Oftentimes, there is an initial, understandable focus on basic needs and stabilization in the aftermath of disasters. But neglecting psychosocial well-being is short-sighted. There is a lot of empirical evidence demonstrating its impact on other elements of individual and community health and resilience, both initially and over the long-term.

What I have learned in my own research, as well as from work by many others in disaster mental health, is that recovery takes time and has many phases. It can be different for different people who experienced the same disaster, and it is important not to judge one person's experiences and reactions by another's.

For example, after a wildfire, one family described enjoying a newfound sense of cohesion and camaraderie with their neighbors. At the same time, they experienced conflicts and tensions because of the differences in what people needed, and the fact that their reactions that were sometimes poles apart. Part of the issue was that the impact the fires had on homes was sometimes vastly different; some were still standing and others right next door were burnt to the ground.

It's also clear from empirical data that secondary stressors play a major role. The trauma experienced during the disaster is important, but what you face as a result -- financial stress, displacement, and other burdens -- adds another component that predicts overall well-being in the long-term.

A California Air National Guard rescue helicopter with air crews provides search and rescue operations during mudslides in southern California, January 2018. Photo by Staff Sgt. Cristian Meyers.

Can you describe the kinds of issues that face people after they deal with disasters? You've written about both trauma and more positive outcomes, like prosocial behaviors, that emerge.

A traumatic event shakes your core assumptions about the world as a safe place. That feeling of deep uncertainty and disruption to your own safety and the safety of those you love can be terrifying. The added intensity of personal and material losses can lead to complete and utter disorientation. Some people I worked with described a period of time when they just couldn't focus on anything, walking around with glazed expressions, not recognizing familiar people and places. At the same time, well-meaning people and organizations tried to provide them with assistance, but they were challenged to receive the benefits.

Following that initial period, they described disrupted relationships. This led to a sense of isolation and disconnection because they were still struggling even though the disaster itself was long past, and they felt ashamed or that others couldn't understand. Several families I spoke with after losing their homes to a wildfire just fell apart over time. They stopped speaking and went their separate ways. They didn't have any resources left within themselves to deal with the losses they had experienced. In the case of a husband and wife, they coped with the disaster very differently and found they didn't know where their common ground had gone or how to find it again.

It is also important to recognize that, yes, there are positive outcomes that people and communities can experience, including finding new meaning and increasing their altruistic and prosocial behaviors towards others. This kind of resilience, or even what's called post-traumatic growth, can happen for anyone. But, no one should feel flawed in how they respond. It takes time to build the capacity for resilience, and it's especially helpful to take a trauma-informed lens to help support people and communities in developing it, rather than judging those who don't show it right away. We do a lot to encourage people and communities to have their emergency preparedness plans and kits ready, but not enough to equip themselves with psychosocial “resilience readiness” in the face of disasters.

How might people working from more of a natural science background become more trauma informed as they work with individuals and communities affected by disaster?

In Santa Barbara, after experiencing the massive Thomas Fire in December 2017 and hazardous air quality for weeks, we were then pummeled by the horrible tragedy of the Montecito debris flow that took the lives of many beloved members of the community. In the aftermath, there has been a surge of connection between scientists, particularly geologists, and the community. People are extremely anxious to understand the science and engage with researchers to comprehend not only what happened, but the potential dangers ahead.

A Santa Barbara County firefighter searches through a home destroyed by a deadly mudflow. Photo courtesy of Mike Eliason/Santa Barbara County Fire.

The kind of scientific information that tends to be helpful, productive, and protective for communities in the immediate aftermath of disasters typically focuses on what's most important for immediate safety and stabilization. These are primary goals that approaches like Psychological First Aid articulate in order to reestablish calm and order and reduce distress. In the longer term, of course scientific information can and should be shared, but it's good to continue to be thoughtful and intentional about how and when to disseminate that knowledge to support community change and resilience. Another great resource comes from journalists who report on disasters and other tragedies, and have thought carefully about how to approach these issues.

I've been fortunate enough to spend time with interdisciplinary groups at conferences focused on climate change and disasters. These conferences have also opened my eyes to the personal distress that natural science researchers and professionals have been experiencing, in part because they are so attuned to the potential risks in our natural environment. This knowledge can heighten their fear and sense of urgency. Those who help communities respond to disaster can experience secondary trauma, or what's called vicarious trauma, which is where people who are responding to disasters or are otherwise exposed to traumatic material can experience the same kinds of post-traumatic stress symptoms.

Oftentimes, people are told to monitor and reduce their exposure to traumatic material, but professionals like first responders and natural scientists who continue to study these issues, don't have that luxury. They can't just turn it off because it comes with the territory. But they would be wise to attend to the role of trauma in their work, to minimize its potential negative consequences. One repository of evidence-informed tools is the Vicarious Trauma Toolkit, which is free and easy to access. I'm hopeful that as we raise awareness about these issues across disciplines that we'll see more energy and commitment towards trauma-informed practices and preparations.

Posted on Tuesday, April 24, 2018 at 5:35 PM
  • Author: Faith Kearns

UC study seeks street trees that can cope with climate change

Reposted from UCANR News

The changing climate predicted for California – including less rain and higher day and nighttime temperatures – is expected to cause chronic stress on many street tree species that have shaded and beautified urban areas for decades.

Realizing that popular trees may not thrive under the changing conditions, UC Cooperative Extension scientists are partnering with the U.S. Forest Service in an unprecedented 20-year research study to expand the palette of drought-adapted, climate-ready trees for several of the state's climate zones.

“The idea is to look at available but under-planted, drought-tolerant, structurally sound, pest resistant trees for Southern California that do well in even warmer climates,” said Janet Hartin, UCCE horticulture advisor in San Bernardino County.

Hartin, a 34-year veteran advisor, said the project is her first to stretch to 20 years; it will likely extend past her tenure with UCCE.

“I'd like to retire in five or six years,” she said. “But I'm very excited about being a pioneer in a study that will continue with my successors. I think it's important for our children and our children's children, as well as for the environment.”

At the end of 2019, with three years of data on tree health and growth rates, the scientists expect to be able to publish the first results and make them available to arborists, urban foresters and residents throughout the regions of the study.

Twelve tree species were selected for each climate zone in the comparative study, with several area parks used as control sites. Hartin and her Southern California research collaborators – UCCE advisors  Darren Haver of Orange County and Jim Downer of Ventura County – worked closely with UC Davis plant biologist Alison Berry, UC Davis research associate Greg McPherson and USFS research urban ecologist Natalie van Doorn to select promising species.

They looked for trees that are already available at local nurseries, but are underutilized. The trees in the project exhibit drought tolerance and disease resistance, plus produce minimal litter. The researchers also sought trees that would provide ample cooling shade for a long time – ideally 50 years or longer.

The varieties come from areas around the world with climates similar to California. Two trees planted in replicated plots at the UC Riverside Citrus Field Station are native to Australia, two are native to Oklahoma and Texas, one is native to Asia and two are non-native crosses of other trees. Three of the trees are native to California: the netleaf hackberry, Catalina cherry and island oak.

“Trees are a long-term investment,” Hartin said. “A tree will live 50, 70, 90 years. The proper selection is very important to help ensure longevity.”

Making the long-term investment with the proper selection yields considerable returns. In a warming world, trees are natural air conditioners.

“Urban areas create heat islands, with dark asphalt surfaces reradiating heat. Cities can be 10 to 20 degrees warmer than the surrounding environment,” Hartin said.

Other tree benefits include soil health and stability, wildlife habitat and aesthetic beauty.

Following are a sampling of trees that are part of the comparative study:

Acacia – A 20-foot-tall, 20-foot wide evergreen that is drought resistant, and withstands moderate irrigation.  Native of Australia.

Palo verde is a drought-resistant tree. (Photo: Bri Weldon, flickr, CC BY-SA 2.0)

Blue palo verde – A tree that reaches about 25 feet in height, the Blue palo verde is drought resistance and lives 50 to 150 years. Its trunk, branches and leaves have a blue-green hue. Native to the southwestern U.S. and Mexico.

Brazilian cedarwood – A native of Brazil and Paraguay, the deciduous tree grows to 50 to 65 feet. The tree produces pale yellow tubular flowers in the spring.

Catalina cherry – Native to the chaparral areas of coastal California, the Catalina cherry grows to 30 feet high. The evergreen tree tolerates drought when mature. It produces sweet purple-to-black edible fruit.

Chinese pistache – A deciduous tree with beautiful fall color. Grows to 35 feet tall, 30 feet wide. Drought resistant, but tolerates moist soil. Native to central and western China.

Desert willow – Growing to 30 feet tall and living 40 to 150 years, the desert willow tolerates highly alkaline soil and some salinity. A deciduous tree, it boasts large pink flowers all summer that attract hummingbirds and other wildlife. Native to the southwestern U.S. and northern Mexico.

Escarpment live oak – Native to west Texas, this tree is cold hardy and drought tolerant. Typically evergreen, it can be deciduous in colder climates.

Ghost gum – Very tall at maturity and drought tolerant. An Australia native.

Indian laurel – Commonly called a ficus, this is a 35-foot-tall, 35-foot-wide tree at maturity that is drought resistant and tolerates highly alkaline and saline soils. Shade potential is high. Native of Asia and Hawaii.

Ironwood – A southwestern and northern Mexico native, Ironwood is semi-drought resistant once mature and tolerates alkaline soil. Ironwood, which grows to about 33 feet tall, can live 50 to 150 years.

Island oak – This tree is native to five of six California off-shore islands. Drought tolerant, it grows to nearly 70 feet tall when mature.

Maverick mesquite – Native to the southwestern U.S. and northern Mexico, this tree does well in full sun and is drought resistant once established. The tree grows to 35 feet tall. The Maverick mesquite is a thornless variety.

Mulga – A versatile and hardy tree that grows 15 to 20 feet in height, the mulga – a Western Australia native – tolerates hot and dry conditions. The leaves are evergreen and the tree has yellow elongated fluffy flowers in spring.

Netleaf hackberry – A California native, the netleaf hackberry grows to 30 feet. Its deep root systems and heat resistance makes the tree idea for urban conditions.

Climate-ready trees planted in 2016 at the UC South Coast Research and Extension Center.

Rosewood – Native to southern Iran, Indian rosewood grows to 65 feet tall, and 40 feet wide. Evergreen. Semi drought resistant and intolerant of alkaline soil.

Shoestring Acacia – Evergreen and 30 feet tall when mature, shoestring acacia is drought resistant and thrives in slightly acidic to highly alkaline soils. Native to Australia.

Tecate cypress – A native of Southern California and Mexico, the Tecate cypress is very drought tolerant. Its foliage is bright green. Young trees are pyramidal in shape, becoming more rounded or contorted with age.

Partners in the tree study are Los Angeles Beautification Team volunteers, LA Parks and Recreation team, Chino Basin Water Conservation District, and Mountain States Wholesale Nursery.

Funding and other support is provided by LA Center for Urban Natural Resources Sustainability, ISA Western Chapter, Britton Fund, USFS Pacific Southwest Research Station, and the UC system.

Posted on Wednesday, April 18, 2018 at 3:45 PM
  • Author: Jeannette Warnert

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