Howard Hughes Medical Institute Holiday Lecture Series - The Double Life of RNA - Lecture One - Catalysis: Chemical and Biochemical by Thomas R. Cech, Ph.D. Tape 1 of 4.
These lectures were given in 1995, when Dr. Cech was Howard Hughes Mediacl Institute Investigator at the University of Colorado at Boulder. www.hhmi.org and www.holidaylectures.org