Sophia Xu

Sophia Xu is Co-Founder and Chief Scientific Officer at Carbon Bridge, a bio-industrial startup developing the world's thinnest bioreactors to make microbes up to 500% more productive at consuming carbon dioxide and converting it into useful materials. Her path into the startup world began with a biology background and a willingness to build from the ground up, including an early chapter running a DIY biolab in New York on $100 a month before Carbon Bridge grew into a well-funded venture.

On The Grove, the podcast from Earth Onward, Sophia spoke openly about what that journey actually looked like, from early experiments in a coffee shop to the realities of scaling a deep-tech company. She also discussed her experience with imposter syndrome as a second-generation immigrant working in a field where representation remains limited, offering an honest account of what it takes to keep going when doubt creeps in. The conversation touched on the gap between the polished, well-resourced startup stories that tend to get attention and the messier, more common experience of building something from almost nothing. Sophia's story is a concrete example of what early-stage climate innovation can look like when it starts not with a large check but with curiosity, resourcefulness, and a clear scientific vision.