Other comments have already mentioned the Valeriepieris circle [1] ~4,000 km in radius which contains over half the world’s population. Another relevant phenome

Other comments have already mentioned the Valeriepieris circle [1] ~4,000 km in radius which contains over half the world’s population. Another relevant phenomenon is Earth’s land and water hemispheres [2]. [1]: https://en.wikipedia.org/wiki/Valeriepieris_circle https://en.wikipedia.org/wiki/Valeriepieris_circle [2]: https://en.wikipedia.org/wiki/Land_and_water_hemispheres https://en.wikipedia.org/wiki/Land_and_water_hemispheres