John Green takes a look back at 2014 in a bit of a different way in this week’s mental_floss List Show. He looks all the way back to 1993 in order to count 21 things that turned 21 years old in 2014. I have no idea what inspired this odd list, but I enjoyed it, since I was busy having a mid-life crisis in 1993, and missed a lot of these things. I hope you enjoy it, too.