Women are happier than men?

According to this study, yes:

http://www.asanet.org/cs/press/view_news?pressrelease.id=393

One theory (not mentioned in the study) is that men might worry more about current events and world problems.

Also, baby boomers (those age 44-62) are less happy, but happiness does increase with age.

Live longer by not eating

Biologists are working on a drug that doubles the lifespan of yeast cells. Next step, humans?

http://gizmodo.com/381123/scientists-discover-how-to-extend-lifespans-without-starving-yourself
"... starving yourself causes your ribosomes (your cell's protein factories) to mutate, which is what leads to the positive effects"