Public Lab supports fellowships that emphasize peer production projects working on community environmental health issues, offering short-term, medium-term, and long-term assignments. Fellows advance the impact of community science on critical environmental health topics, such as particulate air pollution, lead pollution in soil and water, and pipeline monitoring. Fellows must commit to a certain amount of hours per week and will receive stipends of varying amounts, depending on the fellowship. Open calls for individual fellowships are posted regularly.