ArkeaBio, a leading ag-biotech start-up developing a vaccine to reduce livestock methane emissions, announced the close of a $26.5 million Series A financing round. The raise was led by current investor Breakthrough Energy Ventures (BEV), and attracted additional investors, including The Grantham Foundation for the Protection of the Environment, AgriZeroNZ, Rabo Ventures, Overview Capital, and The51 Food & AgTech Fund.