According to the UN Environment Programme, livestock emissions from manure and gastroenteric releases account for almost a third of human-caused global methane emissions. If successful, using a vaccine in cattle to reduce their methane emissions would significantly advance global greenhouse gas reduction efforts. According to the Global Methane Hub, reducing methane emissions by 45% this decade could deliver a cooling effect of approximately 0.3°C by 2040. Professor John Hammond, Director of Research at The Pirbright Institute, said: “To cut global methane emissions by 30%, low frequency interventions are essential. Dr Neil Wedlock, Principal Scientist, AgResearch, said: “We are excited to collaborate with The Pirbright Institute and the Bezos Earth Fund to address this pressing challenge.