How much of human longevity is medical?

There are some animals that can live for hundreds of years. Do the secrets to human longevity lie in a lobster's ability to regrow felled limbs, in a Greenland shark's ultra-slow metabolism, or in an elephant's extreme cancer resistance? Aria, Ben and Saloni discuss why human (and pet) lifespans have increased so much over the past centuries and what we else we can do to age more slowly.

For more, read Aria's piece on longevity: https://worksinprogress.co/issue/the-perks-of-being-a-mole-rat/