How much longer could we live — and more importantly, how much longer could we stay healthy?

Jon Champion talks with journalist and author D.T. Max about the science and possibilities surrounding aging. From extending our “healthspan” to potentially slowing or reversing some aspects of aging, the conversation raises some fascinating questions about how we may live in the future.

D.T. Max’s story appears in the September issue of National Geographic magazine and is also available on natgeo.com.