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The World’s Population Could Comfortably Fit Within London’s M25

March 3, 2023 7 Comments

World population M25

Map and math by reddit user 1337spb

With newly released figures showing that net immigration to the UK increased to a near record 318,000 people last year, it may seem to some that the UK is overcrowded.

However, reddit user 1337spb did the math and showed that you could fit all of the world’s 7.26 billion people in a circle with a diameter of just 50km (31 miles).

London’s M25 Motorway (an orbital highway around London), in contrast, has an average diameter of between 64 and 80km (40-50 miles). Plenty of space to fit the world’s 7 billion people.

While anti-immigration activists would obviously be horrified at such an outcome, XKCD points out that there are far more practical reasons why this would be a bad idea. Mainly, it would be next to impossible for most people to get out alive.

For similar types of though experiments have a look at:

  • What If?: Serious Scientific Answers to Absurd Hypothetical Questions
  • Does Anything Eat Wasps?: And 101 Other Questions (New Scientist)
  • Question Everything: 132 science questions – and their unexpected answers (New Scientist)

Have any thoughts on any of this? Leave your comments below:

Filed Under: Other Tagged With: population

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Comments

  1. Matt says

    May 22, 2015 at 11:47 pm

    That green dot is most definitely not where London is… come on, simple geography!

    Reply
  2. FlameCranium says

    September 11, 2015 at 2:05 pm

    This fascinating and even brilliant observation belies the real problems of opening borders to accept refugees, migrants, and illegals: Housing, educating, feeding, and generally assimilating them into a culture with which they are usually unfamiliar, often hostile. The crush of unrealized expectations rarely ends well.

    Reply
  3. SonOfTheIsles says

    February 6, 2016 at 12:33 pm

    London can have them. At least I’ll know where they all are. They’ll soon be at each other’s throat and the population problem will soon sort itself out. London will be empty.

    I will join the farmers and energy/resource engineers required to remain outside.

    Reply
  4. Dave says

    February 12, 2019 at 3:00 pm

    It’s not because you COULD make every country as densely populated as, let’s say, Bangladesh, that you SHOULD do it.

    Reply
  5. L says

    April 28, 2020 at 12:27 pm

    Of course there is no “overpopulation”. The issue, as you brought it up, is the agenda of mongrelizing European nations with the dark savages of the world.

    Why do you reckon the population of the dark savages has multiplied in the past century? Its not “progress”, it is by design. Financial design.

    Reply
  6. Alain Terrieur says

    September 12, 2020 at 9:55 pm

    How much space does it take in Covid situation when everybody needs to stay 6 feet apart?

    Reply
  7. Phoebe says

    September 12, 2020 at 10:17 pm

    “Your scientists were so preoccupied with whether or not they could, they didn’t stop to think if they should.”
    – Ian Malcolm, Jurassic Park

    Reply

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