The sibling rivalry is at an all time high this week at the Engelman house. Casey, the gold star sister, holds the school record for the egg drop challenge. Determined to beat her older sister and go down in engineering history, Kirby must master the scientific method! But it wont be easy, so they head to Penn State University to learn from the best in the biz.

Originally released by National Geographic, 2018. Streaming video file encoded with permission for digital streaming by Infobase on January 05, 2023.