The aviation sector is a significant contributor to greenhouse gas emissions, and with the increasing demand for air travel these emissions are projected to continue rising in the coming years. Sustainable Aviation Fuel (SAF) could greatly help reduce these emissions and make the aviation industry more eco-friendly. SAF is a renewable, low-carbon alternative to conventional jet fuel produced from sustainable resources. A key step to bringing the fuel into regular use is studying how people view it. Understanding what the public think and feel about biofuels, including aviation fuel, is very important. This is because public opinion can shape consumer interest, demand for products, and the willingness of governments to back green energy policies and invest in clean technologies. The study systematically evaluates the public opinion, perception and awareness of SAF in the South Central United States and its utilization to decarbonize the aviation industry. This is performed through a series of multiple-choice survey questions and interviews. The study results show that while there is some recognition of the environmental impact of aviation and the potential role of biofuels in reducing this impact, there is still a need for greater public education and awareness regarding alternative fuels and their benefits for sustainable aviation. The findings of the study underscore a pivotal challenge in addressing aviation-related carbon emissions: the gap in public knowledge about potential solutions like biofuels and SAF. This gap not only reflects a lack of awareness but also hints at the possible skepticism or uncertainty among the public regarding the effectiveness and viability of these alternatives.

Hydrogen is emerging as a promising energy carrier in the quest to decarbonize a variety of industries, including those involved in the provision of heat and power. The unique and multifaceted applications of hydrogen are attracting significant attention from diverse sectors such as fuel cells, maritime, pharmaceutical, and aviation industries. The term “hydrogen economy” encapsulates the idea of utilizing hydrogen in a manner that is safe, cost-efficient, and sustainable across a wide range of settings. The shift toward a hydrogen economy symbolizes a fundamental transformation in the global energy scene, as countries worldwide endeavor to diminish their carbon emissions and tackle the pressing issue of climate change. This transformation represents a significant stride toward a sustainable future, harnessing the potential of hydrogen as a clean, renewable energy source. The current chapter aims to provide an extensive overview of the hydrogen economy, elucidating its critical role in achieving sustainable development goals. Furthermore, it seeks to highlight the interconnectedness between the hydrogen economy and sustainability objectives. It also aims to explore the current and futuristic roles that hydrogen can play as a significant catalyst, encouraging and facilitating the transition toward sustainable energy. <!----> <!----> <!----> <!---->