 Parental leave. We love to compare it across countries under US federal law. The majority of working dads can take 12 weeks of unpaid parental leave. But let's look at Sweden, which has one of the most generous policies in the world. Their fathers and non-birthing partners can take just as much or even more than the other parent. And that's all covered by the state. Starting this month, new parents can share their leave with other people like grandparents. Here's the BBC's Maddy Savage.