This issue of Radical Teacher looks at the critical creativity radical teachers are marshaling, and have marshaled, in confronting and combating the interlocking crises we face in our classrooms, our campuses and schools, and our world. Such critical creativity was exemplified by Saul Slapikoff (1932-2022), one of Radical Teacher’s staunchest members and the only Biology professor to serve on our board. Alongside new essays, we have collected a representative sample of Saul's work (as well as Susan O'Malley's tribute) to honor his legacy and foundational role at Radical Teacher.