BioEnergy Solutions

As a greenhouse gas, methane is 21 times more powerful than carbon dioxide when it comes to retaining atmospheric heat. And so, although it generally gets less face time in the press, it accounts for a disproportionately large chunk of global GHG emissions. Where does the methane come from? Cows, mostly. At the tail end (pardon the pun) of their digestive system, they release methane; either directly or through the decomposition of their waste.