In this episode of Crash Course Physics, Shini sits down with us to discuss what torque is, how it works, why it works, and what it all has to do with this thing called "Moment of Inertia." ...

Take a look up to the moon's surface features, core, and theories about its formation.

In Crash Course in Romance Episode 12, a young man called him Jeong Seong-hyeon. He says he has lost weight but recognizes him, and Dong-hui says he is not him.