But this ghost is far from the only reported rail sighting in the U.S. "There's a recurring theme. There are ghosts reported ...

The Great Rift in East Africa is one of the few spots on Earth being actively separated by tectonic activity and will ...

This was when the Earth was one continent called Pangaea that slowly broke apart and spread out to form the continents we ...

Ranger naturalist George D. Marler monitoring of changes in hydrothermal activity in Yellowstone was useful in understanding ...