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Climate solutions related to mitigation and adaptation vary across the United States and India, given their unique current socio-political–technological abilities and their histories. Here, we discuss results from online face-to-face interviews undertaken with 33 U.S.-based climate experts and 30 India-based climate experts. Using qualitative grounded theory, we explore open-ended responses to questions related to mitigation and adaptation and find the following: (1) there is broad agreement among experts in both countries on the main mitigation solutions focused on the decarbonization of energy systems, but (2) there are a diversity of views between experts on what to prioritize and how to achieve it. Similarly, there is substantial agreement that adaptation solutions are needed to address agriculture, water management, and infrastructure, but there is a wide variety of perspectives on other priorities and how best to proceed. Experts across both countries generally perceived mitigation as needing national policies to succeed, while adaptation is perceived as more local and challenging given the larger number of stakeholders involved in planning and implementation. Our findings indicate that experts agree on the goals of decarbonization, but there was no consensus on how best to accomplish implementation. 

How do people envision the future energy system in the United States with respect to using fossil fuels, renewable energy, and nuclear energy? Are there shared policy pathways of achieving a decarbonized energy system? Here, we present results of an online survey (n= 2,429) designed to understand public perceptions of the current and future energy mixes in the United States (i.e., energy sources used for electric power, transportation, industrial, commercial, and residential sectors). We investigate support for decarbonization policies and antidecarbonization policies and the relative importance of climate change as an issue. Surprisingly, we find bipartisan support for a decarbonized energy future. Although there is a shared vision for decarbonization, there are strong partisan differences regarding the policy pathways for getting there. On average, our participants think that climate change is not the most important problem facing the United States today, but they do view climate change as an important issue for the world today and for the United States and the world in the future.