Canadian Snacktime Trilogy by BruceM

Question 6

(Either of two answers is acceptable.) Name either the documentary series (new episodes are still being made) that first appeared on CBC in 1960 and has been hosted since 1979 by David Suzuki, or the epic poem by Lucretius that gave the series its name.

The Nature of Things, or De Rerum Natura (accept On the Nature of Things)