What if the Earth were a cube? - an interesting article that will look at the world from a slightly different side with the well-founded facts of scientists.
Physicists pondered in earnest and pondered the question: what would happen if the Earth were not a ball, but a cube? And really, how would it be?
The earth is actually pretty round. It's not the roundest thing in the world, but it's about that. If the Earth were the size of a basketball, then our mountains and valleys would be much smaller than the bumps on a regular basketball. And there is a good reason why the Earth is designed this way.
As the planet gets bigger and the force of gravity on it increases, the weight of the materials begins to overpower the strength of the materials, and the planet is pulled into a sphere.
So a small planet can be shaped like a cube (it is unlikely that it will form exactly in the shape of a cube, but nevertheless). Planets the size of the Earth are doomed to have the shape of a ball.
Life on a cubic Earth will be very different from what we are used to. Although gravity on the surface will not generally be directed exactly towards the center of the Earth (this is only true for spheres), it will still be directed roughly towards the center. Thus, as you approach the edges of the cube, you will feel as if you are on a slope. That is, although it may not look like this, it feels like each of the six sides of the cube will be a bowl. And this phenomenon will have very important consequences.
The oceans and atmosphere will flock to the lowest point they can reach. Thus, in the center of each face of the cube, a puddle is formed about a thousand miles wide. Moreover, both the oceans and the atmosphere will be several times deeper than now. Which, in general, is not as important as one might think. Here on a spherical Earth, if you climb about five kilometers above sea level, most of the air will be above you.