Hats off to this mother of three who got fed up and took charge. Thirteen years ago, Sofía Gatica’s newborn died of kidney failure after being exposed to pesticides in the womb. After the despair came anger, then a fierce determination to protect the children in her community and beyond. Today, she’s one of six grassroots leaders from around the world receiving the Goldman Environmental Prize, in recognition of her courageous — and successful — efforts.