The NTSB concluded three days of investigative hearings into the collision between an Army helicopter and a passenger plane ...

The epic battle was one of the greatest races in history. In the end, the 28-year-old American captured her seventh world championship in the event.

Katie Ledecky remains unbeaten in the 800 freestyle, while the Americans set a world relay record and piled up three gold ...

Katie Ledecky won the 800 meter freestyle at the World Aquatics swimming world championships on Saturday in a truly epic race.

It came on a night when the United States won three gold medals, by far its best performance in what had been a lackluster ...

Katie Ledecky delivered a dominant performance in the 800m freestyle at the World Championships, holding off rising star ...