A near-boundless source of energy with the power to destroy cities, examine the past, and heal the sick, radioactivity lay undiscovered until Marie Curie, working with her husband Pierre and fellow scientist Henri Becquerel, revealed her groundbreaking research in 1898. The three scientists shared the 1903 Nobel Prize in physics.
National Geographic and Windows XP present the following video profiles of people and societies who "started something" that had a significant impact on the development of modern civilization.
FIND THE PERFECT SCENIC DRIVE: Check out these four outstanding U.S. destinations and open new doors to your ideal vacation. Plan your getaway with suggestions for things to see and do, maps, and safe driving tips, and use our site to send a friend a postcard from the road.
DISCOVER APPALACHIA: Find hundreds of family-friendly destinations that appeal to nature lovers, history buffs, and mountain-culture enthusiasts. Get detailed maps showing attractions and points of interest throughout this varied and exciting 13-state region.
WIN A TRIP TO THE GRAND CANYON: Enter our photo contest and you could win a trip for four to the Grand Canyon! Explore our new Grand Canyon interactive map and photo gallery, and find fun and informative kids' activities in our Grand Canyon online feature.