With one foot braced on the helicopter's landing skid, a veterinarian lifted his air rifle, took aim and fired a tranquiliser ...

Polar bears are the undisputed kings of the Arctic, but what makes them so dominant in one of the harshest environments on Earth? Discover the untold truth about their unmatched hunting skills, ...

Now scientists are racing to save these living fossils. For centuries, researchers have pondered how starlings travel in those gorgeous shape-shifting clouds. The answers continue to surprise them.