Cover date: January 2018
On newsstands: November 10, 2017
iD 2019.11: What Makes Me Younger? What Makes Me Older?
iD 2019.09: The Greatest Legends of All Time
iD 2019.07: What Happens When We See Red?
iD 2019.05: Could You Stay Alive?
iD 2019.03: 33 Things that Program your Brain to Make You Fat, Weak, and Sick