Sugar doesn’t actually give you a sugar high, alcohol actually lowers your body temperature and the Santa Claus we all know today was made by Coke. These are common misconceptions that you thought you knew, but didn’t. (Let me know if you actually did know all that)

Enter a series of postcards to send to your know-it-all friends, a mobile app of daily facts that remind you to check yourself and hopefully, a desire to pick up a book at the New York Public Library to keep learning and fact-checking your friends.

Click to experience the mobile app.