Blog Posts Wonderful Women Wednesday: Kimberly Arcand January 4, 2017 by Effie Kapsalis Science Service, Up Close: The Periodic Chart January 3, 2017 by Marcel Chotkowski LaFollette Sneak Peek 1/2/2017 January 2, 2017 by Marguerite Roby Pages« first‹ previous…242526272829303132Produced by the Smithsonian Institution Archives. For copyright questions, please see the Terms of Use.