ArkeaBio

Developing the first vaccine to reduce methane emissions from ruminant livestock (cattle, sheep, goats). The vaccine stimulates the cow's immune system to produce antibodies in saliva that enter the rumen and impair methanogenic archaea, reducing methane production without killing the methanogens, they are out-competed by other microbes. Field trials planned 2026–2027, commercial launch targeted late 2027/early 2028. Targeting a $4B global ruminant methane reduction market plus access to agricultural carbon credit markets.