Operators at a Bell System telephone switchboard, as photographed by the Department of Labor Women's Bureau. U.S. National Archives hide caption

itoggle caption U.S. National Archives

A staff member from DJI Technology Co. demonstrates a drone in Shenzhen, in southern China's Guangdong province. A new website lets people request that drones stay away from their property. Kin Cheung/AP hide caption

itoggle caption Kin Cheung/AP

In a project called "Natural Frequencies," the bells in the Campanile on the University of California, Berkeley campus were recently programmed to play a score composed in real time by the seismic shifts taking place along the Hayward fault. Eric Risberg/AP hide caption

itoggle caption Eric Risberg/AP

Zarine Khan (right) and Shafi Khan, parents of Mohammed Hamzah Khan, speak to reporters in Chicago Oct. 9 after a federal hearing for their 19-year-old son, accused of trying to join Islamic State militants in Syria. Charles Rex Arbogast/AP hide caption

itoggle caption Charles Rex Arbogast/AP

Barbara Beskind, 90, is a designer at IDEO who works with engineers on products that improve the quality of life for older people. Nicolas Zurcher/Courtesy of IDEO hide caption

itoggle caption Nicolas Zurcher/Courtesy of IDEO

Ride-hailing services like Uber have changed ground transportation for both passengers and drivers. As Uber rapidly grows, it becomes more difficult for its drivers to keep up with the hustle. David Ramos/Getty Images hide caption

itoggle caption David Ramos/Getty Images

Interactive touch screens at the newly redesigned Cooper Hewitt museum let visitors sort through the catalog and create their own designs. Cooper Hewitt hide caption

itoggle caption Cooper Hewitt

While viral videos are a common feature of modern Internet life, recently a few audio clips, including sounds from a comet, have become popular. Underwood & Underwood/Corbis hide caption

itoggle caption Underwood & Underwood/Corbis