Newsweek has a special online, "Rethinking Gender," at http://www.msnbc.msn.com/id/18618970/site/newsweek/# It includes the following stories and a photo gallery:

Rethinking Gender: What Makes Us Male or Female?
My Life as a Transgender Politician
A NASCAR Racer On Her Sex Change
Alexis Arquette on the Politics of Gender Change
Journalist Christine Daniels On Her New Life
Q&A: A Prudential VP on Her Transition
Live Talk: Rethinking Gender
Resources for Gender and Transgender Issues