102. Adding Ten Healthy Years to Your Life

101. Celebrating 100 People I (Mostly) Admire

100. Chicago’s Renegade Sheriff Wants to Fix Law Enforcement

99. Greg Norman Takes On the P.G.A. Tour

98. Searching for Our Aquatic Ancestors

97. How Smart Is a Forest?

96. Steven Strogatz Thinks You Don’t Know What Math Is

95. The One Thing Stephen Dubner Hasn’t Quit

94. The Price of Doing Business with John List

93. Annie Duke Thinks You Should Quit

92. John Green’s Reluctant Rocket Ship Ride

91. Jane Goodall Changed the Way We See Animals. She’s Not Done.

90. Peter Singer Isn’t a Saint, But He’s Better Than Steve Levitt

Extra: A Rockstar Chemist Wins the Nobel Prize

89. A Cross Between Sherlock Holmes and Indiana Jones

88. Ken Burns on Heroism, Horror, and History

87. How Much Are the Right Friends Worth?

86. A Million-Year View on Morality

85. What It Takes to Know Everything

84. Yuval Noah Harari Thinks Life Is Meaningless and Amazing