Science & Medicine

How Many Leaves Are on a Tree? Kirk Johnson

Apr 29, 202601:34Science & Medicine

Need to know how many leaves are on that tree? Paleobotanist Dr. Kirk Johnson shares the surprisingly nerdy method—because you never know when leaf math will come in handy. For more, check out the extended interview with...

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How Many Leaves Are on a Tree? Kirk Johnson is an episode from NOVA Now by GBH. Need to know how many leaves are on that tree? Paleobotanist Dr. Kirk Johnson shares the surprisingly nerdy method—because you never know when leaf math will co...

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Published Apr 29, 2026, 01:34 long, audio available.

How Many Leaves Are on a Tree? Kirk Johnson

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