A record-setting triathlete dares to complete 50 Ironman races -- a 2.4-mile swim, a 112-mile bike ride, and a 26.2-mile run -- in 50 days in 50 states.
Many of the most popular taco styles have long, rich, little-known histories. Explore some of them in this eye-opening, mouth-watering food adventure.
Decades after WWII, a former SS officer stands trial in his native Germany after being charged for his complicity in the murder of Jews at Auschwitz.
Experience the highlights of Argentine soccer team Club Atlético River Plate's long history, from its early development to its major victories.
Scientists investigate Earth’s climate machine, looking for clues across the globe, from Greenland’s ice sheet to the desert of Australia.