The dinosaur was about as big as a Tyrannosaurus rex and had a unique nasal horn and symmetrical teeth that it used to eat ...

The Lockheed L-133 Starjet was a prime example of a paradoxical “successful failure.” As I asserted in a recent article for ...

PFC Peter Dudenich of Ambridge and PVT William Patrick Nairn of Aliquippa are among 58 Pennsylvania soldiers who died the morning of Jan. 26, 1944, when their ship struck a Nazi mine being remembered ...

Our world has been shaped by two all-consuming conflicts - and by a global superpower stand-off that brought the world to the brink of destruction. Explore the in-depth sections below.