Every day, all around the world, women are reinventing what it means to be female in cultures where power, privilege or basic freedoms are all too often equated with being male. Here, Caroline Criado-Perez, one of the most vocal and tenacious campaigners of her generation, introduces us to some of these pioneering women. We meet the first woman to cross the Antarctic alone; we meet a female fighter pilot in Afghanistan; we meet a climate change activist who scaled new heights; we meet a Chilean