Lead is a dangerous toxin. UMD chemist Bob Carlson will describe some of his recent work on keeping lead out the environment, the implications of “additive manufacturing” such as 3D printing, and the broader implications of developing environmentally friendly new materials. Meet at 5:30 p.m. at the Rookery Pub. You may also join us for dinner and conversation after the presentation. Call 715-798-3890 to register by February 24. $5 member/$10 non-member.