biofertilizer
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Kula Bio
Kula Bio is a Massachusetts climate-tech company turning naturally occurring nitrogen-fixing microbes into living fertilizer factories that run inside the soil. Born from Harvard chemist Dan Nocera's 'bionic leaf' research, the company supercharges Xanthobacter autotrophicus with a renewable-energy carbon source so the bacteria deliver plant-available nitrogen at the root zone, on demand. Field trials show its flagship Kula-N can replace as much as 80% of a farm's synthetic nitrogen use without the runoff or the fossil-fuel footprint of conventional fertilizer.
Harrison Yoon
Harrison Yoon is the CEO of Kula Bio, a Massachusetts agbiotech company turning supercharged nitrogen-fixing microbes into a low-emission alternative to synthetic fertilizer. A chemical engineer by training with a Cornell postdoc and more than 25 years across cell culture, microbial fermentation and bioprocess engineering, he joined Kula Bio in 2020 as President and COO and stepped up to CEO in November 2025 as the company closed its Series A-1 round and launched shelf-stable products into farmers' fields.