Oliver Sacks was an author, physician and a professor of neurology at the New York University School of Medicine. Chris McGrath/Getty Images hide caption

itoggle caption Chris McGrath/Getty Images

Marie Jalowicz Simon survived the Holocaust by hiding with friends and strangers in Berlin. From the private collection of Hermann Simon hide caption

itoggle caption From the private collection of Hermann Simon
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Manzano, shown above with Rosita — a bilingual Muppet from Mexico — recently announced that she will be retiring from Sesame Street after 44 years. Richard Termine/Sesame Workshop hide caption

itoggle caption Richard Termine/Sesame Workshop

U.S. Air Force F-22 Raptors are seen parked at Kadena Air Base on the island of Okinawa in Japan. The U.S. military established a presence on Okinawa during World War II. Yoshikazu Tsuno/AFP/Getty Images hide caption

itoggle caption Yoshikazu Tsuno/AFP/Getty Images

A row of Google self-driving Lexus cars at a Google event in Mountain View, Calif. The cars use sensors and computing power to maneuver around traffic. Eric Risberg/AP hide caption

itoggle caption Eric Risberg/AP

Alison Bechdel is the author of the long-running syndicated comic strip Dykes to Watch Out For. Elena Seibert/Courtesy of O+M Co. hide caption

itoggle caption Elena Seibert/Courtesy of O+M Co.