According to a recent study, the principles underlying a highly efficient catalyst for methane dry reforming—a chemical reaction in which two greenhouse gases, methane and carbon dioxide are concurrently transformed into a mixture of hydrogen molecules and carbon monoxide-have been found. Because it is used to create valuable chemicals and fuels, this mixture is commonly referred to as "synthesis gas" or "syngas." Several sources, such as landfills and natural gas processing facilities, release methane and carbon dioxide into the environment. Consequently, methane dry reforming provides a method for producing useful compounds from syngas while lowering the emission of two strong greenhouse gases made of carbon. This mandates the utilization of industrially relevant catalysts that can aid in several reactions and have active sites at the molecular level that can permit complex chemistries. One such instance is the catalyst under study here. It is made of oxygen (O), palladium (Pd), and cerium (Ce), where Ce and O are both present as CeO2. The success of the catalyst depends on the interaction between the CeO2 and the palladium, which is fueled by a mechanical procedure known as "ball milling." CeO2 has a molecular structure that readily accommodates clusters of palladium atoms. Mechano-chemical synthesis, commonly known as ball milling, is a dry method for producing highly active and selective catalyst powders. It does away with the costs and energy-intensive solvent separation that is a shortcoming of conventional wet chemistry techniques. This crucial benefit has reignited interest in ball milling, which can be utilised to create a variety of distinctive and potent catalysts. Materials synthesis using wet chemistry frequently requires more energy throughout. Mechano-chemical synthesis has the ability to be scaled up and developed to an industrial level, which is one of its main benefits. The conversion of greenhouse gases into usable chemicals and materials to prevent emission into the environment is a primary priority for carbon-negative methods, such as DOE's Carbon Negative Shot, and this reaction is one approach to achieve so. It is one of the six pillars of the DOE Energy Earthshots Initiative, an extensive campaign to combat climate change through hastening technological advances in environmentally friendly, sustainable energy sources. The researchers believe that a considerably wider range of industrial applications might be made of the ball milling catalyst manufacturing method. It might even have a big impact on "green" chemistry, which tries to develop compounds and procedures that lessen or completely do away with waste production or consumption.