Episode Title:Mystery of the Squirmy Wormy.Episode Description:Aviva builds the Kratt Brothers a new machine, a miniaturizer, allowing them to shrink down to microscopic levels. After a rainstorm, the brothers decide to use it solve the mystery of why earthworms come up to surface after a rainstorm. They decide to stage the experiment in NYC's Central Park. They then spend the day with an earthworm named Pinky, tunneling underground, and observing the everyday life of a worm. But after their new worm friend is carried off by a bird and left on the sidewalk to die, Chris and Martin race to save the worm before the sun dehydrates her.