Description: The National Zoological Park was founded in 1889 to preserve, teach, and conduct research about the animal world. The zoo opened in Rock Creek Park, Washington, DC in 1891, on a site designed by landscape architect Frederick Law Olmsted, and has been home to giant pandas, Asian elephants, and Smokey the Bear. History of the National Zoological ParkAdditional Historic Images of
Description: [edan-image:id=siris_arc_287602,size=250,left]As a child in England in the 1930s, Oliver Sacks enjoyed playing with his Uncle Abe’s spinthariscope. It was, he would later recall, “a beautifully simple instrument, consisting of a fluorescent screen and a magnifying eyepiece, and inside, an infinitesimal speck of radium.We take a look at the spinthariscope at the Smithsonian.