Number 8 Bio raises $11m to commercialise methane-busting cow capsules
The Sydney startup has built a slow-release capsule that can reach the 70% of livestock methane emissions from cow flatulence and belching ‒ where most other solutions can't go.
Enteric methane mitigation—known more commonly as reducing cow belches and flatulence—has become something of a holy grail for climate-focused VCs.
The latest raise to address the pressing issue is for Sydney-based Number 8 Bio which has closed an $11 million Series A led by Icehouse Ventures, the New Zealand firm behind agtech unicorn Halter, with follow-on investment from Main Sequence Ventures and new backing from Japanese climate investor ONE Innovators.
But while seaweed-based solutions have dominated headlines, Number 8 Bio is taking a radically different approach that it claims could unlock the 70% of emissions other products can't reach.
The company's bet? That the real challenge in livestock methane isn't just the chemistry—it's delivery.
