What makes our bodies age … our skin wrinkle, our hair turn white, our immune systems weaken? Biologist Elizabeth Blackburn shares a Nobel Prize for her work finding out the answer, with the discovery of telomerase: an enzyme that replenishes the caps at the end of chromosomes, which break down when cells divide. Learn more about Blackburn’s groundbreaking research — including how we might have more control over aging than we think.

This talk was presented at an official TED conference, and was featured by our editors on the home page.