DNA samples from the oldest living land animal show how good genes and limited biochemical wear and tear have given a giant tortoise named Jonathan an extended lifespan. The genetic switches that control the genes for DNA repair and metabolism more closely matched his much younger relatives.&nbsp;Also today:&nbsp;<ul><li>What fossilized vomit reveals about ancient sea monsters</li><li>Meet the Nobel-winning physicist who hunts for ghost particles at the South Pole</li><li>What Jonathan, the 194-year-old tortoise, can teach us about defying death</li><li>Nuclear clocks begin ticking — and could become the world’s most precise timekeepers</li></ul>For more information about today’s episode, visit <a href="https://cbc.ca/quirks" rel="noopener noreferrer" target="_blank">cbc.ca/quirks</a>.

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Scientists find anti-aging secrets in a 194-year-old tortoise

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