By studying the genome of Lonesome George, a 100-year-old giant Galapagos tortoise who died in 2012, scientists say they've found the secrets to his old age. The reptile's genes show signs of protecting the animal from cancer, bolstering its immune system and better regulating metabolism.

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By studying the genome of Lonesome George, a 100-year-old giant Galapagos tortoise who died in 2012, scientists say they've found the secrets to his old age. The reptile's genes show signs of protecting the animal from cancer, bolstering its immune system and better regulating metabolism.