Methane traps 80% more heat in the atmosphere than carbon dioxide, and while a cow is digesting food, they burp and methane is released into the atmosphere. Dairy farms make up a large portion of this methane, but they have been researching ways to control this for years. They have finally found a way to measure the amount of methane in the atmosphere at these dairies using drones so they have an accurate reading of how much methane dairies actually contribute.
https://news.ucr.edu/articles/2022/05/06/how-drones-can-help-dairy-farms-manage-methane-emissions