James Boettcher co-founded Focus Ventures, which he built into a top-performing U.S. venture fund with over $1.1B in lifetime AUM and more than $3B of investor liquidity, before co-founding Anthropocene Ventures, giving him unusually deep multi-decade fund-building and exits experience for an early-stage climate investor. He has maintained a longstanding focus on climate- and sustainability-related themes dating back to the 1980s, especially around water, waste management, and industrial decarbonization, making him an early adopter of climate tech investing well before it became a mainstream venture category.