What Is the Oldest Living Thing on Earth?
Today I explore one of the most fascinating questions in biology, evolution, and longevity: what is the oldest living thing on Earth?
We tend to think of long-lived animals like tortoises or whales… but the truth gets much stranger once you zoom out. From the Greenland shark and 500-year-old clams, to ancient bristlecone pine trees, massive clonal organisms like Pando, and even deep underground microbial life, the definition of “oldest” starts to break down.
This episode dives into:
* The longest-living animals ever recorded
* How scientists use radiocarbon dating and dendrochronology to measure age
* The difference between an individual organism vs a clonal system
* The science behind biological immortality
* And why the answer depends entirely on how you define life itself
If you’re interested in science facts, extreme longevity, weird biology, evolution, or mind-blowing nature facts, this one’s for you.
Follow along as we break down one of the most deceptively simple questions in science… and why it doesn’t have a simple answer.
So there you have it.
Sources
* Nielsen, J., Hedeholm, R. B., Heinemeier, J., Bushnell, P. G., Christiansen, J. S., Olsen, J., Ramsey, C. B., Brill, R. W., Simon, M., Steffensen, K. F., & Steffensen, J. F. (2016). Eye lens radiocarbon reveals centuries of longevity in the Greenland shark (Somniosus microcephalus). Science, 353(6300), 702–704.
* Butler, P. G., Wanamaker, A. D., Scourse, J. D., Richardson, C. A., & Reynolds, D. J. (2013). Variability of marine climate on the North Icelandic shelf. Palaeogeography, Palaeoclimatology, Palaeoecology, 373, 141–151.
* Schulman, E. (1958). Bristlecone pine, oldest known living thing. National Geographic Magazine, 113(3), 354–372.
* National Park Service. (2023). Great Basin bristlecone pine. U.S. Department of the Interior.
* U.S. Forest Service. (2024). Pando: The trembling giant. Fishlake National Forest.
* Department of Climate Change, Energy, the Environment and Water. (2006). National recovery plan for Lomatia tasmanica.
* Becraft, E. D., et al. (2021). Evolutionary stasis of a deep subsurface microbial lineage. The ISME Journal, 15, 2380–2392.
* Lloyd, K. G., et al. (2020). Growth zone for deep-subsurface microbial clades. Applied and Environmental Microbiology, 86(18).
* Hoehler, T. M., & Jørgensen, B. B. (2013). Microbial life under extreme energy limitation. Nature Reviews Microbiology, 11, 83–94.
#Science #weirdanimals #Biology #AnimalFacts #ScienceFacts #biologyfacts
Music thanks to Zapsplat.