A 100-year-old tragic cave accident led to this national park. Here's what happened.
Floyd Collins got trapped in a Kentucky cave 100 years ago this week, an incident that led to the creation of Mammoth Cave National Park.
The oceanic plate between Arabian and Eurasian continental plates is breaking away
An international research team led by the University of Göttingen has investigated the influence of the forces exerted by the Zagros Mountains in the Kurdistan region of Iraq on how much the surface ...