Abstract-Social simulation models from computational social science are beginning to provide significant advances in terms of implementing more complex social, human, and natural dynamics that are characteristic of how realworld countries operate. The MASON RebeLand model presents three innovations: (1) an explicit polity model with politically complete structure and processes; (2) social and natural model components within an integrated socionatural system; and (3) generative dynamics where insurgency and the state of the polity (stable, unstable, failing, failed, recovering) occur as emergent phenomena under a range of social and environmental conditions. Earlier agentbased models (ABMs) on similar topics have been useful in covering parts of RebeLand's scope. Three scenarios are demonstrated, showing stable, unstable, and failing polity conditions. The MASON computational system also permits additional experiments and extensions.

No abstract

For decades, Americans have generally been moving away from the Northeast and the Midwest toward the South and West. Mountainous and desert areas in the West and Southwest have been especially popular internal migration destinations. However, these same areas are particularly susceptible to the increasing impacts of climate change on extreme heat and wildfire. This paper investigates relationships between disasterlevel fire events and extreme heat on county-level migration in the USA using annual panel data for the years 1990-2015. Are wildfire and extreme heat associated with changes in migration patterns? And, are relationships between such "disamenities" and migration stronger in counties with closer ties to environmental amenities? Fixed effects and random effects regression analysis show that both experiencing a disasterlevel wildfire and extreme heat in the prior year were associated with reduced migration. Relationships are stronger in counties rich in natural amenities and outdoor recreation, suggesting that in places known for their environmental amenities, shifts toward environmental disamenities may be particularly impactful.

Agrivoltaic systems integrate agricultural production with solar photovoltaic electricity generation. Given the proven technical, economic, and environmental co-benefits provided by agrivoltaic systems, increased proliferation is anticipated, which necessitates accounting for the nuances of community resistance to solar development on farmland and identifying pathways for mitigation. Minimizing siting conflict and addressing agricultural communities’ concerns will be key in continued deployment of agrivoltaics, as localized acceptance of solar is a critical determinant of project success. This survey study assessed if public support for solar development increases when energy and agricultural production are combined in an agrivoltaic system. Results show that 81.8% of respondents would be more likely to support solar development in their community if it integrated agricultural production. This increase in support for solar given the agrivoltaic approach highlights a development strategy that can improve local social acceptance and the deployment rate of solar. Survey respondents prefer agrivoltaic projects that a) are designed to provide economic opportunities for farmers and the local community b) are not located on public property c) do not threaten local interests and d) ensure fair distribution of economic benefits. Proactively identifying what the public perceives as opportunities and concerns related to agrivoltaic development can help improve the design, business model, and siting of systems in the U.S.

No abstract