minneapolis-startup
(2)
Carba
Carba is a Minneapolis-area climate-tech company that turns low-value waste biomass - dead trees, yard waste, and other biogenic scraps - into a stable, charcoal-like material called biocarbon (biochar). Using a patent-pending autothermal pyrolysis reactor and an anoxic (oxygen-starved) burial method, Carba locks carbon away for a certified 1,000+ years, most notably inside existing landfills where the material can also filter pollutants. The company sells the resulting permanent carbon-removal credits - including a five-year, 44,000-tonne deal with Microsoft - and aims to remove a billion tons of CO2 by 2035.
OTTO SPORT AI
OTTO SPORT AI is a Minneapolis-based startup building an AI-powered operating system for youth sports. Founded by veterans of SportsEngine, TeamSnap, NCSA, and FloSports and led by CEO Luke Zaientz, it consolidates fragmented tools for club management, league and tournament operations, ticketing, and athlete recruitment into one platform. Its flagship AI product, OTTO PILOT, answers parent and athlete questions from an organization's own knowledge base to cut administrative workload. The company launched publicly in January 2026 with $16.5M in seed funding and three strategic acquisitions.