The smoothness problem

Six decades ago, human spaceflight was a two-sided coin, as the United States and Soviet Russia competed for primacy in the Space Race during the Cold War. With global nuclear holocaust looming menaci

While the word dinosaur stems from the Greek for ‘terrible lizard’, dinosaurs aren’t lizards. This distinction is based on anatomical features, notably the legs. A lizard’s legs stick out at right ang

While many visitors are drawn to Turkey for its southern beaches and inviting coves, those in the know also come for scenic train routes, hikes through cave cities and traditional taverns surrounded by ancient Greek, Roman and Byzantine relics. Plan your own adventure with these country highlights

CHINA’S GROWING PRESENCE IN THE ARCTIC IS INFLAMING TENSIONS WITH THE US

THE MOST DOMINANT FORCE IN THE UNIVERSE IS ALSO ITS MOST MYSTERIOUS AND MOST UNANTICIPATED

Discover the zealous leaders who kickstarted centuries of holy war