Moyer, Jonathan D., & Meisel, Collin J. (2026, March 16). “Climate change modelling and international relations: in pursuit of an integrated, long-term research agenda” in Handbook on the Geopolitics of Sustainability. (pgs. 368-378). Edward Elgar Publishing.

In this book chapter, Pardee Institute Director Jonathan Moyer and Director of Analysis Collin Meisel, identify a crucial disciplinary gap between international relations theory and climate change modelling. To help bridge this divide, Moyer and Meisel call for an integrated research agenda that aligns international relations with the long-term, large-scale quantitative forecasting models utilized by climate researchers. By incorporating a “systems map” approach, researchers can establish a baseline forecast of the international system to test the complex, interacting geopolitical impacts of direct climate effects, mitigation, and adaptation.

Explore the full chapter here.

United Nations Environment Programme. (2025). Global Environment Outlook 7: A future we choose. United Nations Environment Programme. https://www.unep.org/geo/global-environment-outlook-7

What is the real price tag of delaying climate and nature action by another year—or another decade? 

The United Nations Environment Programme’s Global Environemnt Outlook 7: A future we choose (GEO-7) explores this question. Launched on December 9, 2025, at the seventh UN Environment Assembly (UNEA-7) in Nairobi, Kenya, GEO-7 is the most comprehensive scientific assessment of the global environment to date. Produced by 287 multidisciplinary scientists from 82 countries and reviewed by more than 800 experts and 56 review editors worldwide, the report reflects an effort of remarkable scale, ensuring scientific credibility and global representation.  

The price tag – measured in human and economic costs – of failing to achieve transformative change is steep. GEO-7 finds that continued environmental degradation will drive growing economic losses and could cost tens of millions of lives over the coming decades. Pollution, climate change, biodiversity loss, and land degradation are already leading to devastating environmental, economic, and human impacts. The outlook emphasizes that these crises are deeply interconnected and that addressing them will require integrated, system-wide solutions across regions and within national governments and societies.  

Crucially, GEO-7 underscores that this future is not inevitable. The report maps out two “Transformation Pathway” scenarios – alternative ways that societies might achieve global environmental goals while supporting economic prosperity. The technology-focused transformation focuses on technological development and efficiency gains. The behavior-focused transformation illuminates how shifts in values and material consumption patterns could drive change. Together, these pathways explore how structural change in energy, food systems, land use, materials and waste, and finance could alter long-term outcomes. 

Taylor Hanna, Associate Director of Development Analysis at the Pardee Institute, and Jonathan Moyer, Director of the Pardee Institute, served as lead authors on Chapters 10 and 11. These chapters map the global implications of the continuation of current trends (Chapter 10) and the pursuit of transformation pathways (Chapter 11). They draw on the Pardee Institute’s International Futures (IFs) model, used alongside other global environmental and economic models, to explore long-term trajectories for economic, agricultural, and energy indicators.  

The Sustainable Development Goals (SDGs) call for global partnerships, recognizing that ending poverty is linked to progress in education, energy, and health. The IFs model suggests that under current trends, the world will achieve only modest well-being improvements and miss many SDG targets. Many will still lack basic needs, and disparities between high-income countries and others persist. This highlights an opportunity for countries to align strategies with sustainability and improve well-being. Scenario analysis shows where integrated policies can close gaps and foster inclusive progress. 

By contrast, the Transformation Pathways mapped out in GEO-7 suggest meaningful progress is possible –not only toward global climate goals and stronger economic growth, but also toward improved human well-being worldwide. In the modeling, these pathways lift more than 100 million people out of extreme poverty, 200 million out of hunger, and prevent 9 million premature deaths relative to Current Trends. 

This is the third GEO assessment to which the Pardee Institute and the IFs model have contributed, following earlier involvement in GEO-4 and GEO-6. By contributing to successive GEO assessments, the Pardee Institute continues to provide systems-based long-term analysis as part of a wider international effort to link environmental science with policy decisions. You can access the full GEO-7 report here and view background information, including press releases and the report timeline.  

Sahadevan, D., Irfan, M. T., Luo, C., Moyer, J. D., Mason, C., & Beynon, E. (2025). Charged for change: The case for renewable energy in climate action. UNDP; Pardee Institute for International Futures; Octopus Energy.

Moyer, J., Meisel, C., Szymanski-Burgos, A., Scott, A., Casiraghi, M., Kurkul, A., Hughes, M., Kettlun, W., McKee, K., Matthews, A., (2025, March 17). When heads of government and state (HOGS) fly: Introducing the country and organizational leader travel (COLT) dataset measuring foreign travel by HOGS. International Studies Quarterly, Volume 69, Issue 2, June 2025, sqaf013, https://doi.org/10.1093/isq/sqaf013

Despite representing a crucial day-to-day diplomatic tool, travel by heads of government and state (HOGS) has remained an under-investigated topic in international relations, inhibiting our ability to better understand how these visits change foreign aid, interstate conflict, diplomatic affinities, and more. Here, we fill that gap by introducing the first global dataset on the foreign visits of state leaders, the Country and Organizational Leader Travel (COLT) dataset, which allows us to present descriptive analysis and assess the monadic and dyadic drivers of foreign travel by HOGS. We find evidence consistent with previous literature explaining the motives of leader travel: development, trade, conflict, institutional co-membership, and regime type. In addition, we show a potential further application of the dataset, presenting original results on the relation between diplomatic visits and international trade. Overall, these data represent a unique indicator of international interaction that cuts across levels of analysis.

Andrijevic, M., Zimm, C., Moyer, J.D., Muttarak, R., et al. (2025, February 4). Representing gender inequality in scenarios improves understanding of climate challenges. Nature Climate Change. 15, 138–146. https://doi.org/10.1038/s41558-024-02242-5

Achieving gender equality can increase societies’ capacities to deal with climate change. Here we highlight empirical connections between gender equality and climate change adaptation and mitigation to propose a structured and detailed inclusion of gender-related aspects in the Shared Socioeconomic Pathway framework. The introduction of hypothetical pathways of gender (in)equality in the scenario space can help analyse interactions with other socioeconomic drivers and subsequent implications for adaptation and mitigation options. The extent of challenges to climate change adaptation and mitigation may substantially change depending on the rate at which societies progress towards equal access to resources and opportunities for self-realization for all genders. We propose steps that the scenario community could take to enrich the next generation of socioeconomic pathways.

Solórzano, J., Hughes, B., Irfan, M., Xiong, Y., Kwasi, S., Ibrahim, A., Makhamatova, S., Hanna, T., Moyer, J. (2024, December 20). Protocol for making forecasts exogenous in the International Futures model. One Earth. https://doi.org/10.1016/j.xpro.2024.103414

Understanding future dynamics and trends in human and natural development is foundational for creating appropriate policy strategies to address planetary and development challenges. Here, we present a protocol for adding exogenous series for key variables, such as the shared socioeconomic pathways, to the database of the International Futures (IFs) integrated model. We describe steps for installing IFs and the SQLiteStudio software, understanding the IFs database, importing series, running the model, and extracting results.
For complete details on the use and execution of this protocol, please refer to Moyer.

Moyer, J., Sahadevan, D. (2024, December). Navigating the future: Four scenarios assessing child well-being in the twenty-first century. UNICEF. https://www.unicef.org/innocenti/media/10201/file/UNICEF-Innocenti-Navigate-Future-Report-2024.pdf

As we move through the twenty-first century, humanity faces a complex array of challenges. These mutually reinforcing issues include climate change and geopolitical instability, as well as persistent socioeconomic disparities that have profound implications for children’s well-being. At such a critical crossroads, policy choices we make today will determine the welfare of future generations. In their interest, addressing this complex web of collective action problems demands a broad-based, integrated analysis focused on comprehensive and equitable solutions.

Abidoye, B., Banda, A., Baumwoll, J., Carman, R., Moz-Christofoletti, M., Orlic, E., Patterson, L. (2024). Advancing the SDG Push with equitable low-carbon pathways. UNDP. https://www.undp.org/publications/advancing-sdg-push-equitable-low-carbon-pathways

The ‘SDG Push x NDC 3.0’ research, a collaboration between UNDP and the Frederick S. Pardee Center, outlines a framework for a fair, low-carbon energy transition that considers the needs of both wealthy and lower-income nations. The report updates the second flagship publication, Leaving No One Behind: Impact of COVID-19 on the Sustainable Development Goals (SDGs), examining an integrated set of policy strategies that accelerates climate actions while promoting human development. By supporting equitable access to energy, green investments, and digital infrastructure, it aims to foster inclusive, sustainable growth and align with the Paris Agreement targets.

The research finds that an additional 60 million people could be lifted from poverty by 2030, and upwards of 175 million people by 2050, through these ambitious, yet feasible policy choices. In addition, nine out of ten low-human development countries could make significant strides towards improving their current development outcomes by 2050 while carbon emissions are reduced by two-thirds by 2050.

Meisel, C., Moyer, J. D., Matthews, A. S., Kaplan, O., Byrnes, R., Benjumea, K., Cribb, P., & Van Son, C. (2024, August 20). Bearing witness: Introducing the Perceived Mass Atrocities Dataset (PMAD). Journal of Peace Research. https://doi.org/10.1177/00223433241249333

Led by Pardee's Associate Director of Geopolitical Analysis, Collin Meisel, and commissioned by the US State Department to support the Elie Weisel Act, this coding framework is a prime example of the Institute's goal to bridge the gap between academic work and policy-making communities. Congratulations to all of the hard-working Korbel students who contributed to this impressive research and all the co-authors on this outstanding accomplishment.

Abstract:

The risk factors and consequences of atrocities are deeply interconnected with questions of intra- and interstate stability and conflict, economic development, colonialism, and gender equality, as well as atrocity crime monitoring and prevention. However, there is no globally comparable measure of lethal and less-lethal atrocities. The Perceived Mass Atrocities Dataset (PMAD) is a country-year measure of atrocities with accompanying narratives. Built to support the US Congress’s Elie Wiesel Genocide and Atrocities Prevention Act of 2018, PMAD enables the systematic comparison of the occurrence and magnitude of seven atrocity types, in addition to group-perpetrated violence against women and LGBTQIA+ groups, with aggregate atrocities indices for 196 countries from 2018 to 2022. PMAD offers a foundation for quantitative studies of atrocities as well as more qualitative, process-focused research of lethal and less-lethal violence with its single, divisible framework. The PMAD data highlight several regions where analysis of atrocities using data on only lethal atrocities would be inadequate, especially Central and Eastern Asia. The data can also facilitate research into the relationships between mass atrocities and gender discrimination, neopatrimonialism, and political polarization.

Yemen voluntary national review. (2024, July). Contributions from Taylor Hanna, Abdelrahman Ibrahim, and Jonathan D. Moyer. Ministry of Planning and International Cooperation. https://hlpf.un.org/countries/yemen/voluntary-national-reviews-2024

Yemen has been experiencing an exceptional phase and highly complex conditions for ten years due to a coup by the Houthi terrorist militia against the state. One of the consequences of this war has been the collapse of the state and the redirection of development and growth trajectories into the negative for many years, with Yemen falling in all international economic, humanitarian, and social indicators. However, despite this difficult reality, the resilience and cohesion of Yemenis, along with the sincere support from brothers and friends, have been fundamental in normalizing the situation, restoring stability, and resuming the building of state institutions. Despite all the challenges, including the ongoing war and difficult economic conditions, there are efforts being made to restore building and development, with national consensus on strengthening institutional work and developing tools to interact with the world and integrate into the visions of development and prosperity of the region and the world, and to address the consequences of the war. The economic file represents a top priority in the government's agenda and its general program, including achieving sustainable development goals and enhancing economic resilience. Five main priorities have been set for the government's work in the coming phase: (a) restoring the state and achieving sustainable peace, (b) combating corruption and enhancing transparency and accountability, (c) achieving financial and administrative reform, (d) developing economic resources, and (e) maximizing the benefits from external aid and grants and directing them according to the needs and priorities of the government. Through these five priorities, we will strive to achieve tangible and clear progress towards the sustainable development goals, and we will harness all possible energies for this purpose.