World's Most Awesome Record Breakers

See extraordinary people push themselves to the limits of physical and mental endurance in their efforts to break the most daunting records in the world. Witness one man's amazing swim across the Atlantic Ocean. Observe the construction of a six-story sandcastle. Follow a man's unicycle trek across America. Watch a priest pull a 16-ton fire truck. And hold your breath as a man dives 439 feet underwater -- without scuba gear.