A man and a boy walk at a site hit by a Saudi-led air strike in Yemen's capital Sanaa on July 3. More than a million civilians have been displaced in recent fighting.
Yvette Benavidez Garcia and her husband, Rene, dropped by the StoryCorps studios to reminisce about Yvette's father, Roy, a Medal of Honor recipient whose daring rescue mission in Vietnam cast ripples into his later life as a father.
By clicking "Like" and commenting on Facebook posts, users signal the social network's algorithm that they care about something. That in turn helps influence what they see later. Algorithms like that happen all over the web — and the programs can reflect human biases.