Vaccine could cut cow burp impact.

A start-up called ArkeaBio has developed a prototype vaccine that reduces methane emissions from cow burps by 13%. Cattle produce methane as a byproduct of digesting grass and hay, making agriculture the largest source of human-caused methane pollution. The vaccine targets methane-producing bacteria in cows' digestive systems and has shown promising results in a trial, with no adverse side effects or disruption to growth rate. ArkeaBio aims to bring a commercial vaccine to market within three years, with the goal of reducing methane emissions by 15 to 20% per cow for at least 3 to 6 months. [Extracted from the article]