Issue: #147
Last valuation update: 2025-12-24
It's Science Fair time at Springfield Elementary, and Lisa sets out to win the top prize. Her daring experiment into the genetic similarities between the members of the Simpson family blows up in her face when she discovers that one member of her immediate family is not a blood relative. You'll never guess who it is! Meanwhile, Bart and Milhouse stage their own experiment in sleep deprivation, whi...
Creators: Chuck Dixon, Mike Decarlo, Elma Blackburn, Bill Morrison, Phil Ortiz, Jason Ho, Mike Rote, Karen Bates, Art Villanueva, Matt Groening
Characters: Marge Simpson, Bart Simpson, Lisa Simpson, Homer Simpson, Maggie Simpson, Janey Powell, Ralph Wiggum, Wendell, Uter, Milhouse Van Houten, Ned Flanders, Database, Professor Frink, Nelson Muntz, Principal Skinner, Terri, Todd Flanders, Sideshow Mel, Superintendent Chalmers, Snowball II