Health Secretary Robert F. Kennedy Jr.'s Centers for Disease Control and Prevention has launched an unprecedented review of routine shots given to kids, alarming public health experts.

Huerta co-founded the United Farm Workers union to improve working conditions in the nation's fruit and vegetable fields and coined the phrase "Sí, se puede!" that became a widespread rallying…

Scientists are hoping to treat diseases including cancer and Alzheimer's by influencing how cells make life-or-death decisions.