Livestock farming produces large quantities of greenhouse gases, especially methane, which is particularly harmful to the climate. Among other things, it escapes during the storage of animal excrement, the slurry. A study by the University of Bonn now shows that methane emissions can be reduced by 99% through simple and inexpensive means. The method could make an important contribution to the fight against climate change. The results have now been published in the journal Waste Management.