brian: one of the women prominent in your book, laura deming. here she is.deo clip] >> sometimes people say, if i lived to be 100 or 200, i would get bored pretty quickly. i can't understand that. at m.i.t., i loved looking at things, thinking about physics, things like waves, or trees. life is mind blowingly exciting. there is no better way to remember that than to think about what it would be like to die. i want to cure aging. i want to make us all live forever. brian: how old is laura deming now? alexandra: 22. brian: did she go to m.i.t. after she became a fellow? alexandra: no, she went at age 14. she joined a lab at uc berkeley at age 12, then m.i.t. at 14. she is fascinating to talk to because she finds biology so interesting and gets so excited. i was so impressed by her. she was so different. brian: why did she do the fellowship? alexandra: because she already had been to college, and here was this network of people, including this guy named dr. gray who had -- his whole research is based around ending the disease of aging. peter thiel had given him