Smartest Year Ever
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.
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