Ammonia, a chemical widely used for nitrogen fertilizer production, is a major source of greenhouse gas emissions due to the traditional energy-intensive Haber-Bosch process. MIT researchers have developed a groundbreaking approach to produce ammonia without conventional fossil-fuel-powered plants. By leveraging the Earth's geology to generate clean hydrogen underground, the team has demonstrated a more sustainable method for ammonia synthesis. The process involves injecting water, nitrogen sources, and a metal catalyst into iron-rich subsurface rock to create ammonia. This innovative technique aims to mitigate the environmental impacts of current ammonia production methods. Utilizing geological hydrogen production allows for ammonia synthesis with minimal emissions and energy requirements. Additionally, transporting ammonia is more feasible and cost-effective compared to hydrogen, given the existing infrastructure and commercial market. The research team's work presents a promising solution to the challenges of traditional ammonia production and highlights the potential for adopting more environmentally friendly practices in the chemical industry.