Why Some Animals Live for Centuries—and Others for Hours?
Why do some animals live for only a few hours while others survive for centuries? In this video, we explore the biology and evolution of animal lifespan—from adult mayflies and Greenland sharks to bats, naked mole-rats, bowhead whales, elephants, tortoises, and 500-year-old ocean quahog clams. You’ll learn how body size, metabolism, predation, reproductive strategy, DNA repair, protein maintenance, telomeres, cellular senescence, and cancer resistance work together to shape longevity. We’ll also explain Peto’s paradox, why larger animals do not automatically develop more cancer, how scientists estimate the age of Greenland sharks, and what unusually long-lived species may teach researchers about human aging. Which adaptation would be most valuable for humans: the stress resistance of bats, the cancer resistance of naked mole-rats, or the DNA repair systems of bowhead whales? Share your choice in the comments. #AnimalLongevity #Biology #Science 00:00 Hours vs Centuries 00:50 Body Size and Metabolism 02:07 Why Bats Break the Rule 02:59 Long-Lived Birds 03:52 The Naked Mole-Rat Exception 04:47 Predation and Natural Selection 06:13 Fast vs Slow Life Histories 08:05 What Happens Inside Cells 08:42 Oxidative Stress 09:32 Proteins, DNA, and Telomeres 10:56 Cellular Senescence 11:51 Genes vs Environment 12:53 Peto’s Paradox 13:52 Bowhead Whales 14:43 Greenland Sharks 15:53 The 500-Year-Old Clam 16:30 What Animals Could Teach Humans 17:45 Why Lifespans Differ 19:11 Which Adaptation Would You Choose?
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