The report discusses new refrigerants that could replace harmful ones in cooling systems like chillers. Different chemicals have been identified as options. The researchers wanted to find alternatives to common, damaging refrigerants like R134a. Some of the alternative options showed promising test results. The new choices might not be perfect yet, but they are better for the environment. Researchers are looking for options with lower greenhouse gas levels and better safety ratings. These new refrigerants could be used in the future to make cooling systems more environmentally friendly.