USA TODAY spoke with the authors about the most surprising takeaways and reactions since the book was published April 1. ...

Census data shows the number of one-child families in Australia has more than doubled in the past 40 years. We spoke to mums who are happily "one and done" to learn more.

Tracey Cox chats to men from the UK - as well as a dominatrix - to hear about one of the the most misunderstood ...