Outlining some of the best impact wrenches available for car enthusiasts, along with their key features and tips to keep in mind before you buy.

We'll take a look at what torque and horsepower actually is, how they are related, and why you should care. We'll also look ...

Why it's incredible: The crater has a unique oval shape and asymmetric sides. The Hailin impact crater is a giant gouge in a Chinese hillside that was left by a asteroid which smashed into Earth ...