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Level A1 – BeginnerCEFR A1
2 min
74 words
- Researchers at a university studied diamond dust for cooling.
- They tested its possible use high in the stratosphere.
- The plan is to reflect sunlight and cool the Earth.
- Volcanic sulfur also reflects sunlight but causes harms.
- Diamond dust can include tiny carbon impurities that absorb light.
- These impurities reduce light scattering and increase heating.
- The team found these tiny diamonds are not a good option.
- They recommend stopping work on unsuitable materials for cooling.
Difficult words
- researcher — A person who studies and finds new knowledgeResearchers
- stratosphere — The layer of the atmosphere above the clouds
- reflect — To send light back from a surface
- impurity — A small unwanted substance inside a materialimpurities
- scatter — To make light spread in many directionsscattering
- sulfur — A yellow chemical from volcanoes and rocks
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you agree with stopping work on materials that do not help cooling?
- Have you ever seen a diamond?
- Do you think reflecting sunlight can help cool the Earth?
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