A study by the Raumberg-Gumpenstein Higher Federal Research Institute for Agriculture in Austria has found that adding lemongrass to cattle diets can reduce methane emissions by nearly 15%. The study involved feeding the herb to cattle and measuring methane emissions using a special sensor. The reduction is attributed to the plant's secondary plant substances, specifically tannins, which affect intestinal bacteria and decrease methane production. However, the availability of lemongrass in colder climates is a concern, and the study is also looking into the potential of sainfoin as an alternative feed to reduce methane emissions.