 Burping livestock are a big problem for our planet. When cows and other ruminants eat, feed ferments in their gut and produces enteric methane. This powerful greenhouse gas is expelled through belching. Together, the world's 1.5 billion cattle and buffaloes and 2 billion sheep and goats produce the equivalent of 3.3 gigatons of carbon dioxide. By trapping more heat than carbon dioxide, methane contributes to global warming. Yet, with more sustainable farming practices, we can reduce enteric methane emissions. We can improve ruminants' diets, take better care of their health, and breed them to be more productive. FAO and partners are working with countries to assess their greenhouse gas emissions and develop sustainable livestock systems that benefit farmers, the economy, and the planet.