😱 Can you BOOlieve it's Halloween? To celebrate, we're sharing our favorite SCAREntists from science past. We hope you find them HUMERUS. WITCH is your favorite? Happy Halloween from World Science Festival! 🎃 #trickortreat 👻🤓 . . . . . . . . . . #halloween #happyhalloween #pun #punny #funny #humor #lol #ghost #scary #science #trick #jokes #haha #eek #yikes #boo #einstein #tesla #carlsagan #darwin #fear #spooky #puns #photoshop #costume #halloween2018 #scientists #meme