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The U.S. government utilizes programs like CLEEN, ASCENT, and NASA's flight testing to advance sustainable aviation. The Continuous Lower Energy, Emissions, and Noise (CLEEN) program focuses on aircraft electrification, advanced wing materials, and emission reductions, with the first two phases expected to reduce fuel consumption by 51.1 billion gallons by 2050. The Aviation Sustainability Center (ASCENT) coordinates universities and private stakeholders on sustainable aviation fuels and airworthiness standards. Additionally, NASA and Boeing are developing the X-66A experimental aircraft to test the Transonic Truss-Braced Wing Design, which could reduce fuel consumption and emissions by up to 30% compared to current single-aisle airliners.

The U.S. Department of Energy (DOE) is funding between four and ten Regional Clean Hydrogen Hubs (H2Hubs) using $8 billion allocated by the 2021 Infrastructure Investment and Jobs Act (IIJA). These hubs are designed to catalyze domestic clean hydrogen production and operationalize the DOE's Hydrogen Shot goal of reducing production costs by 80% to $1 per kilogram within ten years. Applicants are evaluated on feedstock diversity (requiring demonstrations from fossil fuels, renewable energy, and nuclear energy), end-use diversity (covering electric power, industrial, residential/commercial heating, and transportation), a minimum 50% non-federal cost share, and community benefits plans aligned with the Justice40 Initiative. The program aims to decarbonize hard-to-electrify sectors—which accounted for nearly 16% of U.S. emissions in 2018—and foster hydrogen-fueled transportation corridors and export potential. Financial viability is further supported by the Inflation Reduction Act's Section 45V tax credit, offering up to $3.00 per kilogram of clean hydrogen for projects starting construction before 2033.

The document details the U.S. effort to reach a goal of one million electric vehicles by 2015 through the development of 'deployment communities' and infrastructure. It describes federal initiatives like the Transportation Electrification Initiative and Clean Cities, regional efforts such as the Northeast Electric Vehicle Network, and commercial fleet adoptions by companies like Frito Lay and General Electric. It also lists specific legislative proposals aimed at increasing consumer tax credits and funding for community deployment and fleet upgrades.

The document details US efforts to reach a goal of one million electric vehicles by 2015, focusing on federal, state, and local deployment programs, the role of commercial and government fleets, and proposed legislation to incentivize PEV adoption and infrastructure.

The report details the progress of the Second Collaborative Research Network (CRNII), the Small Grants Program for Human Dimensions (SGP-HD), and an IDRC-funded project on the La Plata Basin. Key findings include the impact of land-use change on hydrology in the La Plata Basin, the vulnerability of Andean cloud forests and glaciers, and the development of urban pollution forecasting for Latin American cities. The document emphasizes the role of 'Human Dimensions' projects in bridging the science-policy divide, providing evidence for forest protection laws in Brazil and Argentina, and improving water management strategies in Chile and Mexico. It also highlights the capacity building achieved through scholarships and workshops for over 1,600 students across the programs.

The 28th SAC meeting in Miami reviewed the status of IAI's Cooperative Research Networks (CRN II) and Small Grants Programme for Human Dimensions (SGP-HD), emphasizing the need for better scientific integration across projects and increased institutional visibility. Key discussions included the development of a Latin American optical phenology network, the creation of science-society interaction proposals, and the importance of translating scientific achievements into policy briefs.

The IAI Directorate Report covers the period from July 2016 to May 2017, focusing on the implementation of transdisciplinary research and capacity building across the Americas. Key activities include the management of the Third Collaborative Research Network (CRN3), the development of Professional Development Seminars (PDS), and the establishment of a Science-Policy Liaison Directorate (SPLD) to bridge the gap between scientific findings and governmental decision-making. The report also highlights IAI's engagement with international conventions such as the UNFCCC and CBD, and the launch of a Massive Open Online Course (MOOC) on climate change impacts in Latin America.