The red dot institute of design wants presentations on original materials that make our built environment better. Interested designer, engineers, or anyone developing inventive materials should submit their proposals, including a brief biography with an abstract of their presentation, by May 14. Chosen speakers will give their lectures at an international seminar to be held at the red dot museum in Essen, Germany, in July. A special exhibition, “Moving Materials,” will feature some of these avant-garde developments and run in conjunction with the seminar from July 3-29.