A new study offers compelling evidence that Earth's inner core reversed direction and is slowing down.

The solid metal core of Earth does not rotate perfectly in time with the outer layers of the planet, and new research confirms that it has now reversed direction. Seismic waves passing through the ...

Build a stronger, leaner core after 50 with 6 standing workouts that tighten your waist, improve posture, and boost strength.

Earth’s inner core has both changed its relative rotation rate and deformed in the past few decades, according to an analysis of seismic waves recorded when the inner core occupied the same relative ...

If the goal of your workout is to walk away with a chiseled six-pack, you’re missing the point. Credit...Gritchelle Fallesgon for The New York Times Supported by By Jenny Marder To perform well at ...

Are you ready to rumble? We hope so—because boxing is a phenomenal (and seriously fun!) head-to-toe sweat. Throwing a few strikes will quickly get your heart pumping and supercharge you with ...

AB TRAINING SHOULD be more than just an afterthought for the last 10 minutes of your workout routine. The majority of your favorite strength training exercises—from deadlifts and squats to rows and ...

The Earth’s inner core is rotating faster than the outer mantle and crust, according to a new study of earthquake data. The difference is slight but means that the solid inner core makes an extra ...