interactive they are free and there is food but you do need to register to attend and you can do so by logging onto our website again at academy of science stl org you can find even more science opportunities talk some tours on our web site or listed on the event fliers and Academy literature that is available for you to take with you before you leave this evening if you'd like to receive a notification of upcoming academy public lectures and events there are some enews sign-up sheets that will make their way