32-year-old Erik Weihenmayer from Boulder, Colorado, became the first blind person to reach the summit of Mount Everest.
Source
JonBenét Ramsey was found dead.
Mexican grill chain Chipotle opened its first restaurant.
Colorado became the 38th state to join the United States of America.
Mike the Headless Chicken lost his head.
15 die in the Columbine High School massacre.