Deep in the ruins of Chernobyl’s Reactor 4, hidden beneath layers of radioactive debris, lies one of the most dangerous ...

The surface pf an elephant's foot is very flexible and sensitive ... which is much lower than the human range of 20 hertz. These vibrations can be heard from as far as 20 miles away.

However, the discovery of a frozen human foot in early October has brought a partial end to a century-long search — and reignited one of the greatest mountaineering mysteries of all time.