vaccines, we might say okay, unless we help them out, they won't get going and in return for our unvestment, we get free access to that technology for the very poor countries. it's a win/win when it works out. >> can i ask each of you about the work, the one item you've worked ond at the foundation you're most proud about. >> melinda, voice and money. >> do you want to talk a little bit about that? >> i took on this work two years ago of getting contra septembcen women's hands. if they can space and time the birth of their children, the women are healthier as are the children. it's a very controversial era. we've taken it off the agenda. we have countries all over the world going through commodities and teaching them about contraceptives and delivering them. >> how about you? >> i'm always excited about the latest thing. i lover the idea of challenging the best scientist who wouldn't know. we solicit the idea of a new condom that was more less unattractive. >> i'm not helping you out. you're on your own. >> the buffet foundation was accused of having a cherry flavored condom. >> never shoul