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AI and low-cost sensors map air pollution in South Africa (Level A1) — aerial view of city near body of water during daytime

AI and low-cost sensors map air pollution in South AfricaCEFR A1

9 Sept 2025

Level A1 – Beginner
2 min
67 words
  • Scientists use particle physics methods to monitor air quality.
  • The system is called AI_r and uses artificial intelligence.
  • Many low-cost sensors sit in pollution hotspots.
  • A first pilot started over a year ago.
  • Sensors were placed in schools in Soweto.
  • One open burn can affect air ten kilometres away.
  • Next year 500 sensors will go to Sedibeng district.
  • The project has support from governments and CERN.

Difficult words

  • pollutionharmful substances in the air.
    pollution hotspots, air pollution
  • measureto find the size or amount.
  • technologyscientific tools and methods.
  • monitorto observe or check something.

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • What do you think about air pollution?
  • How can technology help fight pollution?
  • Why is it important to monitor air quality?

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