Watch as Kari Byron makes Jello optics, finds the wavelength of chocolate, and "vacuums" a marshmallow. Then check out robot butterflies, a marble tube on a downhill run, and how to survive in a falling elevator.

Check out one of nature's engineering marvels, the eggshell. See a dog kennel-shaped satellite. Find out how fast escape velocity is, how to dye your clothes and how hibernating bears maintain muscle tone.