Okay, so women's lib is way imperfect: Women are still underpaid, still endure harassment, still get far too little credit for raising children—the hardest and most important work conceivable (pardon the pun). Even so, there has never been a time or place where it was easier to be female than in today's developed world. Women have gained more freedom in the past 50 years than in all of recorded history. That's especially good because as society empowers women, women are empowering society. The fact that the weaker sex is growing stronger may just save the world.