📖+10 XP
🎧+10 XP
✅+15 XP
Level A1 – BeginnerCEFR A1
2 min
74 words
- A new air filter captures CO2 indoors.
- It can fit in many building ventilation systems.
- The filter is reusable and easy to regenerate.
- Buildings then need less fresh outside air.
- Heating and cooling systems use less energy.
- This change can lower people’s energy bills.
- Saturated filters are collected and sent for processing.
- Solar heat can release the captured CO2.
- Lower indoor CO2 helps people feel more alert.
- The idea could help reduce pollution citywide.
Difficult words
- capture — take and keep gas or particlescaptures
- ventilation — movement of fresh air in a building
- reusable — can be used again many times
- regenerate — make something ready to use again
- saturated — full of liquid or gas
- pollution — dirty air or water in the environment
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Would you have this filter in your house?
- Do you like the idea of lower energy bills?
- Do you feel different when indoor air is fresh?
