The practice of diverting water from the Red Sea to other regions has emerged as a significant source of carbon emissions, equivalent to the exhaust emissions of approximately 9 million cars. This alarming revelation highlights the environmental consequences of large-scale water diversion projects and underscores the need for sustainable water management practices to mitigate climate change impacts. The diversion of water from the Red Sea to other regions, primarily for agricultural and industrial purposes, has become increasingly common in recent years. While these projects may address water scarcity challenges in recipient regions, they come at a significant environmental cost, exacerbating carbon emissions and contributing to global warming. The carbon emissions associated with Red Sea diversions stem from various sources, including energy-intensive pumping operations, evaporation losses, and changes in land use patterns. These emissions contribute to the greenhouse effect, trapping heat in the Earth's atmosphere and exacerbating climate change impacts such as rising temperatures, sea level rise, and extreme weather events. Moreover, the environmental impact of Red Sea diversions extends beyond carbon emissions, affecting marine ecosystems, biodiversity, and coastal communities. Changes in water flow and salinity levels can disrupt fragile ecosystems, endanger marine species, and undermine the livelihoods of coastal communities dependent on fishing and tourism. Addressing the environmental challenges posed by Red Sea diversions requires a multifaceted approach that balances water security concerns with environmental sustainability objectives. Governments, policymakers, and stakeholders must prioritise the adoption of sustainable water management practices, invest in water conservation and efficiency measures, and explore alternative solutions to meet water demand without compromising environmental integrity. Furthermore, international cooperation and coordination are essential to address the transboundary impacts of large-scale water diversion projects and ensure equitable sharing of water resources among riparian states. By working together to implement sustainable water management strategies, countries can mitigate the adverse environmental impacts of Red Sea diversions and contribute to global efforts to combat climate change. In conclusion, the revelation that Red Sea diversions emit carbon equivalent to 9 million cars underscores the urgent need to reassess water management practices and adopt sustainable solutions to address water scarcity challenges while mitigating environmental impacts. By prioritising environmental sustainability and embracing collaborative approaches, countries can achieve water security goals without compromising the health of ecosystems or exacerbating climate change.