For most of human history, doing arithmetic, while sometimes aided by devices like the abacus or adders, was fundamentally an act of human intelligence. In the 17th and 18th century, a few natural ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This ten-key printing electric adding ...

When: 7:30 p.m. Wednesday-Saturday, 2:30 p.m. Saturday-Sunday, 7:30 p.m. Oct. 27; through Nov. 1 Info: $57 to $71; 202-332-3300; studiotheatre.org Forgive me, but one of the funniest things about ...