Giant tortoises are some of the long-lived species on the planet. Here’s what biologists now understand about one of nature’s most impressive longevity experiments.

The average human lifespan hovers just under 80 years, which may seem like a long time—until you compare it to some of the champions of longevity in the animal kingdom. Certain species can outlive us ...

Gramma, a Galapagos tortoise that was the oldest living animal at the San Diego Zoo, has died at an estimated 141 years of ...

After more than a century of munching on her favorite foods of romaine lettuce and cactus fruit, beloved Galápagos tortoise Gramma, the oldest resident of the San Diego Zoo, has died. Gramma was born ...