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Map: A look at world population density in 3D

29 November 2020
Dan Ackermann

This fascinating map is made by Alasdair Rae of Sheffield, England, a former professor of urban studies who is founder of Automatic Knowledge. It shows world population density in 3D.

Details: "No land is shownon the map, only the locations where people actually live. ... The higher the spike, the more people live in an area. Where there are no spikes, there are no people (e.g. you can clearly identify ... the Sahara Desert)."

  • The major world population concentrations are immediately obvious — particularly China, India and Indonesia.
  • "Yet it is often also possible to pick out even quite small towns and cities, such as those in the south of New Zealand, or northern Russia."

How it works: Rae says that he uses "data from the EU's GHSL dataset, software is Aerialod by @ephtracy and render time for the big image was about 6 hours."

  • Rae explains that the light-and-shadow effect lets you identify some isolated population centers, including ones in Hawaii and central Australia.
  • And he reminds us of the old saying: "Where there is water, there is life."

Go deeper: "How to make a 3D population density render for any country in the world." ... More maps.

Transcripts show George Floyd told police "I can't breathe" over 20 times

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Newly released transcripts of bodycam footage from the Minneapolis Police Department show that George Floyd told officers he could not breathe more than 20 times in the moments leading up to his death.

Why it matters: Floyd's killing sparked a national wave of Black Lives Matter protests and an ongoing reckoning over systemic racism in the United States. The transcripts "offer one the most thorough and dramatic accounts" before Floyd's death, The New York Times writes.

The state of play: The transcripts were released as former officer Thomas Lane seeks to have the charges that he aided in Floyd's death thrown out in court, per the Times. He is one of four officers who have been charged.

  • The filings also include a 60-page transcript of an interview with Lane. He said he "felt maybe that something was going on" when asked if he believed that Floyd was having a medical emergency at the time.

What the transcripts say:

  • Floyd told the officers he was claustrophobic as they tried to get him into the squad car.
  • The transcripts also show Floyd saying, "Momma, I love you. Tell my kids I love them. I'm dead."
  • Former officer Derek Chauvin, who had his knee on Floyd's neck for over eight minutes, told Floyd, "Then stop talking, stop yelling, it takes a heck of a lot of oxygen to talk."

Read the transcripts via DocumentCloud.