How old was David Grinspoon in…

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David Grinspoon was ? in Venus: Death of a Planet as 'Self'.

Movie Released: Sat, Aug 28 2021

David Grinspoon was ? in 51 IFLY as 'Speaker'.

Movie Released: Fri, Feb 12 2021

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Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages

David Grinspoon was ? in NOVA: The Planets as 'self'.

TV Show Released: First Air Date
Thu, Jul 25 2019