While President Donald Trump has enacted mass rollbacks on climate policy at the federal level, Boston University’s climate research programs and sustainability groups have continued to educate and advocate.

The festival encompasses activities for all ages, including a LEGO shipbuilding competition and a virtual tour of a LEGO model of the USS Constitution, according to the USS Constitution Museum website.

The Mattapan Branch of the Boston Public Library, in coordination with the National Park Service, held an interactive discussion on Saturday called “Sarah’s Long Walk for Equality in Education,” centered around the life of Sarah Roberts, a young black Bostonian whose family sued the city of Boston in 1848 when she was denied adequate, accessible schooling.