A man watches a TV news program showing a file image of missile launch conducted by North Korea, at the Seoul Railway Station in Seoul, South Korea, on Oct. 20. The U.S. military said it detected a failed North Korean missile launch that day. The U.S. Strategic Command issued a statement late Wednesday saying it presumed the missile was a Musudan intermediate-range ballistic missile. Lee Jin-man/AP hide caption

This image taken in 2012 shows part of the Crosson Ice Shelf (center left) and Mount Murphy (foreground) on the western edge of Antarctica. Thwaites Ice Shelf lies beyond the highly fractured expanse of ice (center). John Sonntag/Nature hide caption

Pam Rector (left) with her daughter Grace became a single mother by choice when she was ready to have a child. Liv Aannestad is expecting her first child in March through the same process, and like all expecting parents she has some questions. Courtesy of Pam Rector/Courtesy of Liv Aannestad hide caption

A young Haitian suffering from cholera symptoms receives medical attention Saturday at Saint Antoine Hospital of Jeremie in southwestern Haiti. Hector Retamal/AFP/Getty Images hide caption

Cori Bargmann is applying her training as a neuroscientist to shaping the Chan Zuckerberg Initiative's ambitious agenda. Chan Zuckerberg Initiative hide caption

Karen Lorne, diagnosed with Lou Gehrig's disease in July, volunteers weekly with her certified therapy dog, Bailey, at the Ronald McDonald House in Chapel Hill, N.C. Courtesy of Karen Lorne hide caption

Looking out at the Atlantic Ocean from Elmina Castle, I felt the pull of different forebears. Courtesy of Kainaz Amaria hide caption

Mother Jones reporter Shane Bauer went undercover with the Three Percent United Patriots border militia group. Winni Wintermeyer/Courtesy of Mother Jones hide caption

A man takes a selfie near a picture of Chinese President Xi Jinping at an exhibition at a military museum in Beijing on Monday. Xi is expected to use an important meeting this week to re-emphasize his anti-graft campaign. Analysts say the campaign is also used to go after rival factions within the Communist Party. Andy Wong/AP hide caption

Andy Griffith as a pre-reality TV star turned populist in A Face in the Crowd. Courtesy of The Kobal Collection / Warner Bros hide caption