A midair collision at the Grand Canyon killed over 100. The disaster partially led to the start of the FAA and changed air ...

The 1956 collision over the Grand Canyon killed more than 100 people. At the time, it was the deadliest civilian plane crash and ... on the first few helicopter rides to the impact sites, but ...

German skydiver Max Manow pulled off an 'endless skydive,' becoming the first person to hook onto a plane midair over the Grand Canyon.

Midair collisions are less common than they once were because of strict regulations controlling air traffic in the U.S., enacted partially as a result of a fatal Arizona plane crash nearly 70 years ...

Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: ...

There are alot of great caves in the US but there is a hot debate over which one is better Mammoth Cave or Carlsbad Caverns.