Walter Cronkite (right) listens as Dr. J. Presper Eckert (center) describes the functions of the UNIVAC I computer he helped develop in the early 1950s. AP hide caption

Miami-Dade narcotics detector canine Franky, who came out of retirement to give a demonstration, sniffs marijuana in Miami in 2011. Franky's supersensitive nose is at the heart of a question being put to the U.S. Supreme Court: Does a police K-9's sniff outside a house give officers the right to get a search warrant for illegal drugs? Alan Diaz/AP hide caption

A statue representing womanhood — and women's role in raising children — is seen with the Mormon Temple in the background in Salt Lake City. Douglas C. Pizac/AP hide caption