Hosts
- 1975-1979: David Suzuki
- 1979-1991: Jay Ingram
- 1992–present: Bob McDonald
Suzuki went on to host CBC Television's The Nature of Things. Ingram left to become founding host of Discovery Channel Canada's nightly science-news program @discovery.ca. McDonald came to Quirks from having hosted CBC Television's children's science program Wonderstruck.
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