But as far as we know, no other bodies in the solar system exhibit plate tectonics today. Why is our world different? "We don't know for sure," Bradford Foley, a geodynamicist at Penn State ...

Watch as Minnesota Wild forward Marcus Johansson is shaken up and heads to the locker room after taking an elbow from Edmonton Oilers forward Connor McDavid late in the second period. Connor ...

Nuggets center Nikola Jokic injured his right elbow while warming up for a game Wednesday night and was ruled out 45 minutes before opening tip between Denver and the Houston Rockets. The Nuggets ...