This research paper explores how different relationships between people and nature can be fostered by learning experiences to bridge harmful gaps in the field of sustainability. Current disconnectedness from nature and people both within and across geographical borders hinder the cultivation of sustainable solutions. After attending a sustainability-oriented educational experience abroad in Ecuador recently, I decided to investigate how cross-cultural exchanges in Ecuador influences participants’ views of nature, new points of intersectionality participants learn while amongst nature in Ecuador, and what about this experience made it uniquely meaningful. Research methods included individual interviews and a group hike and picnic focus group discussion to collect qualitative data. I found that during this experience, students were able to lean into being vulnerable with each other, connect with indigenous community members beyond language borders, and connect with nature in ways that fostered awareness of the human position within it. From this, I learned that there were unique aspects of this learning experience that allowed for these relationships to be built and therefore for sustainable knowledge from the trip to stick when participants got back to the United States. The amount and flexibility of learning and processing time and dynamics created by classroom structure were important variables to the effectiveness of the learning experience. Institutions can learn from these experiences and connect people back to nature to implement successful sustainability solutions in the future.

Plasticizers are plastic additives used to enhance the physical properties of plastic and are ubiquitous in the environment. A class of plasticizer compounds called phthalate esters that are not fully eliminated in wastewater treatment facilities are relevant to the ecological health of downstream ecosystems and urban areas due to their ecotoxicity, tendency for soil accumulation, and the emerging concern about their effects on public health. However, plasticizer concentrations in a constructed wetland environment have rarely been studied in the United States, prompting the need for a method of plasticizer quantification in the Tres Rios Constructed Wetlands which are sustained by the effluent of the 91st Avenue Wastewater Treatment Plant in Phoenix, Arizona. The concentrations of four common plasticizer compounds (dimethyl: DMP, diethyl: DEP, di-n-butyl: DnBP, and bis(2-ethylhexyl): DEHP phthalate) at five sites across the wetland surface water were quantified using solid-phase extraction followed by gas chromatography coupled with mass spectrometry (GC/MS). The sampling period included four sample sets taken from March 2022 to September 2022, which gave temporal data in addition to spatial concentration data. Quantification and quality control were performed using internal standard calibration, replicate samples, and laboratory blanks. Higher molecular weight phthalates accumulated in the wetland surface water at significantly higher average concentrations than those of lower molecular weight at a 95% confidence level, ranging from 8 ng/L to 7349 ng/L and 4 ng/L to 27876 ng/L for DnBP and DEHP, respectively. Concentrations for dimethyl phthalate and diethyl phthalate were typically less than 50 ng/L and were often below the method detection limit. Average concentrations of DnBP and DEHP were significantly higher during periods of high temperatures and arid conditions. The spatial distribution of phthalates was analyzed. Most importantly, a method for successful ultra-trace quantification of plasticizers at Tres Rios was established. These results confirm the presence of plasticizers at Tres Rios and a significant seasonal increase in their surface water concentrations. The developed analytical procedure provides a solid foundation for the Wetlands Environmental Ecology Lab at ASU to further investigate plasticizers and contaminants of emerging concern and determine their ultimate fate through volatilization, sorption, photodegradation, hydrolysis, microbial biodegradation, and phytoremediation studies.

Golf courses require large amounts of water and other resources. The Southwestern United States has experienced rapid population growth, coupled with a dramatic increase in the built environment and golf courses. This paper aims to assess the environmental sustainability of golf courses in the Phoenix Metropolitan area at multiple scales in terms of water, ecosystem services and management practices. We report on the number and spatial distribution of golf courses, the amount of water used by them, the ecosystem services they provide, potential social injustice issues within the area, and the sustainability of management practices. There are 197 golf courses within the Phoenix Metropolitan Area, which are composed of 465 patches covering an area around 57 square miles. The golf courses within the Phoenix Active Management Area use around 500 acre-feet of water per year. Golf courses are categorized as an industrial water user and account for roughly half of all industrial water use in the Phoenix Active Management Area. The primary water source for golf courses is groundwater, with effluent as their second most-used source. Most golf courses are located in areas with a median household income between $61,333-$90,185 and only one was located in an area with a median household income below $27,393. Golf courses in the region provide a number of ecosystem services and help the local economy in multiple ways. However, given the scarcity of water and the projected drier and hotter climate in the American Southwest, we suggest curbing the expansion of golf courses and implement more sustainable management practices.

Sustainability is a critical global issue that requires urgent action at all levels, as emphasized by the U.N. 2030 Agenda for Sustainable Development. Education has been identified as a key driver for advancing sustainability globally, and higher education institutions are uniquely positioned to contribute to the social, economic, and environmental transformations required to tackle the world's most pressing issues due to their capacities to produce groundbreaking research, innovative solutions, and critical education to address sustainability issues across disciplines. However, these efforts alone are not enough to confront the sustainability challenges we face in the present and future, as ultimately, change for sustainability must occur in human behavior at the community and individual levels. Universities can play a key role in promoting behavior change due to their status as living laboratories, and their responsibility to prepare students, regardless of discipline, for addressing the challenges they will face as leaders in the future. By addressing student behavior change for sustainability, universities can create a model for changing community behaviors and produce future leaders in all disciplines that will be prepared to confront global sustainability issues. As a university recognized for its dedication to sustainability, this study addresses barriers to behavior change for sustainability in students at Arizona State University (ASU). Despite ASU’s championing of sustainability, the overall university community has yet to consistently practice sustainable behaviors, especially students. To understand why sustainable behaviors are not being practiced at ASU, interviews with ASU students, staff, and faculty find barriers to behavior change at the university pertaining to university infrastructure, campus culture, messaging, and student engagement. The study recommends actions to address these issues, as well as recommends further research into the individual sustainability issues where these barriers occur.