According to Our World in Data, the 1.5 billion cattle which are raised specifically for meat production around the world emit at least 231 billion pounds of methane over the course of a year, and troublingly, methane has 80 times the warming power of CO2 during its first 20 years in the atmosphere.
We don’t talk about Polycyclic Aromatic Hydrocarbons(PAHs) often but a PhD student at the University of Aberdeen has brought them into the spotlight, having found that moss can act as an effective way of monitoring this pernicious pollutant.