MIDAlpha TitleTitleYearColor/BWRunning TimeFormatsAbstractTopics
2326PROJECT DEEP PROBEPROJECT DEEP PROBE1969color29 min16mm Relates how scientists, using the ship Glomar Challenger as their research tool, are trying to determine what the earth looked like millions of years ago. Presents the hypothesis that the earth was once a single body of land, rather than the continents as we now know them. Describes how the ship can send a probe of 20,000 feet to retrieve samples of the ocean floor for analysis.