Despite being inland, Acton faces recurring flooding issues, including on the boardwalks that wind through its conservation lands and local byways. In response, a new community initiative — the Acton Flood Solutions Hackathon — is inviting middle and high school students to develop creative, science-based strategies to address the problem. Organizers say there’s still time to sign up for the September 30 Zoom information session and register by October 3 at absteam.org/hackathon. AB STEAM (Acton Boxborough Science Technology Engineering Art Math), in partnership with the Town of Acton Conservation and Sustainability Office and EnergizeActon.org, invites students in grades 7–12 to…