Age: 38
Occupation: Director, National Domestic Workers Alliance
Poo has been working for more than a decade to give domestic workers — nannies, housekeepers, home-care nurses — basic workers' rights like overtime pay, paid vacation and protection against discrimination. She helped get the Domestic Workers' Bill of Rights passed in New York and is working on a similar effort in California. Her next big project: empowering the thousands of domestic workers now being hired to care for the aging baby-boomer generation.