We’re back with a brand new series of the 51 Percent and in this special edition we take a look at how the notion of parenthood is dramatically changing as women delay having children. We head to Spain which has become the El Dorado of fertility treatment as thousands of foreigners seek to take advantage of the country's flexible laws.

Also just how reliable is freezing one's eggs? We talk to Canadian researcher, Angel Petropanagos, on how turning back the biological clock comes at a price.

Plus how some German women and men are redefining the concept of what makes a traditional family.