Whether you're switching up your typical strength training routine or rehabbing after injury, introducing instability into your workouts will have you shaking and aching like never before. There are a ...

Most of us learned in school that the Earth has four layers in its internal structure: the crust, the mantle, the outer core, and the inner core. But recent research reveals that the inner core itself ...

Earth's core has baffled researchers for decades, and it still contains many secrets. Recent studies show this hot furnace buried deep under our feet is weirder than we think. The inner core may be ...