A Chicago teenager became the youngest person in her university’s history to earn a doctorate degree. The discovery of a long-lost branch of the Nile River could help solve a mystery of the pyramids. Think you could win a ‘do nothing’ contest? CNN Chief Medical Correspondent Dr. Sanjay Gupta gives us advice on the keys to happiness. Plus, a 90-year-old man becomes the oldest person to reach the edge of space—and accomplishes a goal he’s had for more than 60 years.

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