This grant provides ongoing support to Benjamin Dubin-Thaler, the founder of BioBus, and the team of 25 community scientists, educators, and nonprofit experts. BioBus started as a state-of-the-art science lab visiting schools in New York City to provide science opportunities aimed at K-12 students. BioBus brings a science field-trip-like experience to under-resourced schools and community groups, and has grown to include afterschool and weekend programs, summer camps, and paid high school and college research internships. Grant funds will allow BioBus to serve more than 115,000 diverse students (over half of their students identify as Latina/o/x and over a quarter as Black) from the Lower East Side to Harlem, as well as other locations in the Bronx, Brooklyn, Queens, and Staten Island, and explore a possible national expansion, while building annual financial support from NYC and New York State governments.