What ‘Immortal’ Jellyfish and Famously Old Tortoises Tell Us about Aging

单集文稿 ...

• 00:15

  For Scientific American Science Quickly, I'm Rachel Feldman.

• 00:29

  In the animal kingdom, lifespans can stretch from mere hours to entire centuries.

• 00:34

  But that's just the start.

• 00:36

  Some creatures deteriorate so slowly that we've never actually caught them dying of old age.

• 00:42

  Others don't seem to age at all.

• 00:45

  And some can apparently reset their biological clocks and bounce back to infancy to start all over again.

• 00:52

  Plenty of humans would like to figure out how that works and potentially harness the ability for our own use.

• 00:57

  But science has a long way to go.

• 00:59

  The truth is that we barely understand why or how we age in the first place,

• 01:05

  let alone how we might stop it.

• 01:07

  My guest today is Jean-Pedro Magalhães.

• 01:10

  He's the chair of molecular biogerontology at the University of Birmingham in England,

• 01:15

  and he's here to tell us all about the nascent science of aging.

• 01:20

  Thank you so much for coming on to chat today.

• 01:22

  My pleasure.

• 01:23

  Thank you for the invitation.

• 01:24

  So I'm sure that all of our listeners know that different species have different lifespans,

• 01:29

  but could you start by giving us a sense of some of the extremes that are out there?

• 01:33

  Absolutely.

• 01:34

  It's been a mystery of biology for a very long time,

• 全部文稿