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Hanna Rosin is the author of the fascinating and provocative new book The End of Men: And the Rise of Women, which explores the shift in power dynamics between men and women and what it means for the future.

Worldview talks with Michael Madero, assistant coach for the University of Chicago's men's soccer team, about the upcoming 2012 European Championships. Then we hear about Argentina's new gender identity law, which allows individuals to legally change their gender without any kind of medical procedure. And, Jerome confronts his new nemesis as Bike to Work Week begins in Chicago. 

In Japan, not much is happening between the sheets in many marriages. And it’s not necessarily that different for single people, either.According to a recent government survey on attitudes toward sex and marriage, one in four unmarried Japanese men has never ever had sex.

Japan's birth rate is extremely low, so every five years the government conducts a survey on attitudes toward sex and marriage.  And the latest statistics suggest that it's unlikely the birth rate will go up.   It turns out that lots of Japanese aren’t even having sex.