i'd really like to thank the center for population health and the professor, woody carlson. i'm. >> reporter: pro . >> i'm very proud to be here. i've said that fertility crime is here and this is one of the key issues of our contemporary times. the point is where do we go from there? >> i grew up not far away from the theater in milal. maybe i developed a bit of a voice. >> so i will make my key point first and start developing elements and then i will go on and talk about happiness. i will try to tie up my discussion with policy issues and then glad to take some questions. >>> first, some apologies. i would rather be eurocentrick in my presentation. >> the easiest thing is how does it work? if you are in a society that is doing well, we tend to do better. there are some challenges and maybe the u.s. is one of the societies where we have some challenges and maybe that's tied to, say, the same issue that i'm going to discuss today. but, usually, what we know is that within a society, the better off. it's relatively straight forward. in my grags, i have a simpbl definition of