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Study: Pollution not main cause of recent energy imbalance — Level A1 — A view of clouds from an airplane window

Study: Pollution not main cause of recent energy imbalanceCEFR A1

22 Dec 2025

LevelA1
A2
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Adapted from Diana Udel - U. Miami, Futurity • CC BY 4.0

Photo by Piotr Musioł, Unsplash

Level A1 – Beginner
2 min
73 words
  • A new study looks at pollution and warming.
  • The study finds pollution is not the main cause.
  • The planet is gaining heat now.
  • In the north, air has become cleaner.
  • Cleaner air lets more sun reach the ground.
  • In the south, fires and a volcano made more particles.
  • Those particles make clouds brighter and reflect sunlight.
  • The north and south changes go in opposite ways.
  • They mostly cancel out and do little worldwide.

Difficult words

  • pollution — dirty air or water that harms nature
  • warming — a rise in the planet's average temperature
  • particle — a very small piece of solid or liquid
    particles
  • reflect — to send light or heat back away
  • volcano — a mountain that can send out lava

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

Discussion questions

  • Is the air clean where you live?
  • Do you see many clouds near your home?
  • Have you ever seen a volcano?

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