Our readers explain that spirit (or bubble) levels indicate the direction of Earth's gravitational pull, though local ...

Spirit levels are inexpensive tools but will save you a lot of effort, heartache and cash if they’re used in the first instance. It’s much better to check orientation with a level first than ...

Although inequality may well be problematic for these conventional reasons, The Spirit Level tells us that it’s mainly bad because it makes status differences more extreme and salient and thus ...