How Many Leaves Are on a Tree? | Kirk Johnson episode artwork

EPISODE · Apr 29, 2026 · 1 MIN

How Many Leaves Are on a Tree? | Kirk Johnson

from Particles of Thought · host 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 come in handy.For more, check out the extended interview with Kirk Johnson.Learn more about NOVA and subscribe to our YouTube channel. 

Episode metadata supplied by the publisher feed · Published Apr 29, 2026

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How Many Leaves Are on a Tree? | Kirk Johnson

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