Program 17:  The Precious Envelope  pdf

Running Time:  28:38

     Journey through the exciting world of chemistry with Nobel laureate Roald Hoffman as your guide.  The foundations of chemical structures and their behavior are explored through computer animation, demonstrations, and on-site footage at working industrial and research labs.  Distinguished scientists discuss yesterday’s breakthroughs and today’s challenged. 

Produced by the University of Maryland and the Educational Film Center. 

Released on cassette:  Fall 1989     The Annenberg/ / CPB Collection  1-800-LEARNER