Description: In February 1975, twenty Smithsonian scientists gathered at the National Zoo's Conservation Research Center in Front Royal, Virginia to talk about their research and the future of science at the Smithsonian.
Description: Henry David Hubbard (1870-1943), a physicist at the U.S. National Bureau of Standards, designed the first edition of the "Periodic Chart of the Atoms" in 1924. The chart is still in use today, continually updated to reflect new elements.