What is the Oldest Living Organism on Earth?

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A tree.
The Old List is curated by scientists and is a list of all officially dated ancient trees (image credit: Unsplash/Roman Averin).

"What's the oldest tree or other living organism on Earth?" That question was posed to BBC Crowd Science, and it turns out it's a difficult question to answer. The oldest confirmed organism is a bristlecone pine tree in California that's 5,067 years old. But its possible there are a few other organisms on the planet that are much older.

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What is the Oldest Living Organism on Earth?
Marnie Chesterton
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Jesse Rogerson, PhD

Jesse is a passionate scientist, educator, and science communicator. As an assistant professor at York University in the Department of Science, Technology, and Society, he teaches three classes: History of Astronomy, Introduction to Astronomy, and Exploring the Solar System. He frequently collaborates with the Canada Aviation and Space Museum, and lends his expert voice to the Ingenium Channel. Jesse is an astrophysicist, and his research explores how super massive black holes evolve through time. Whether in the classroom, through social media, or on TV, he encourages conversations about how science and society intersect, and why science is relevant in our daily lives.