Population density maps are always good fun. And this one showing US states is no exception. As picked up on Reddit (the original is on Wikipedia), this map shows what each state would look like ...

If you look at the map and suspect that sightings mirror population density—a fair assumption ... A new molecular technology could help us solve our ever-growing need for data storage ...

At such a critical moment in US ... population of crammed megacities can be difficult, but a series of population spike maps have made the task much clearer. These maps visualise population ...