Overview: Robin visits Mount St. Helens two years after its historic 1980 eruption to see where plant life in the area is attempting a comeback. In the weekly studio experiment, Miguel explains to Paco how fungus colonizes.BIOGRAPHY: Geraat Vermeij, a native of Holland, studies shells.THE BLOODHOUND GANG: ""The Case of the Computer Caper, Part Three."" Vikki discovers that the woman who poured water in the trash can, is left-handed. Looking closer at the pictures, Ricardo realizes that the money–wrapped in plastic–froze to the bottom of the trash barrel. Back at the park, the gang is surprised to hear from a hot dog vendor that the ""lady"" came back for the trash can. In truth, the culprit is a man. (Concludes in next episode.)