Description: For those of us too young to have understood the impact of the fall of the Berlin Wall, and to those who watched breathlessly as the it came down, this should interest you: an augmented reality app that projects a 3-D rendering of the Berlin Wall at its former site with the help of a smartphone. It was as big as a . . . The US Intelligence Advanced Research Projects Activity
Description: [caption id="" align="alignright" width="210" caption="Portrait of a City Marshal by Barr & Wright, 1870-1880, National Museum of American History, Catalog number 77.43.1678."][/caption] Help the Smithsonian ID a Houston city marshal from the 1870s in the picture on the right. The extremely flammable nitrocellulose film used before 1951 led to an estimated 80 percent of silent