At first glance, an I-beam looks flimsy compared to a solid chunk of steel — but its geometry is what makes it powerful. Most of the strength in a beam comes from how far the material is placed from ...

For the first few decades of the 20th century, pickup trucks were pretty primitive machines. Spartan cabs with little in the way of creature comforts, simple, torquey drivetrains, and solid axle front ...