American here, lived in Europe a while, but back. I got decent with meters. Recently, I've been thinking about ways to visualize a billion. Here's one: There'

American here, lived in Europe a while, but back. I got decent with meters. Recently, I've been thinking about ways to visualize a billion. Here's one: There's a billion cubic millimeters in a cubic meter (cubic yard). If you take a meter (yardstick) and visualize the 1000 millimeters in it, then make a plane of that 1000x1000, i.e. a million, then stack a thousand of those, that's a billion. I still can't get my head around it, TBH. A billion is a lot! But "billion cubes" are a nice unit; you can stack up a lot of them to get more billions.