📖+10 XP
🎧+10 XP
✅+15 XP
Level A1 – BeginnerCEFR A1
2 min
74 words
- Wildfire smoke raises ozone near the ground.
- This happens across the continental United States.
- Higher ozone is bad for people's health.
- Scientists studied many years of weather and air data.
- They compared days with and without smoke.
- Some places show much higher ozone after fires.
- Clear days after fires can still be risky.
- Added ozone makes it harder to improve air quality.
- Older people are more at risk.
- Many deaths are linked to smoke.
Difficult words
- wildfire — A large uncontrolled outdoor fire.
- smoke — Air with small dark particles.
- ozone — A gas near ground that can harm.
- continental — Relating to a large land area.
- study — To look at information carefully.studied
- air quality — How clean or dirty the air is.
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Have you ever seen wildfire smoke near you?
- Do you check air quality before going outside?
- Who in your family might be more at risk from smoke?
Related articles
15 Dec 2025
25 Apr 2025
31 Jul 2025
27 Oct 2025
29 Apr 2026
Released goldfish harm lakes and ponds
Researchers at the University of Missouri and the University of Toledo used outdoor experiments with artificial lakes to show that released pet goldfish stir sediments, reduce invertebrates, weaken native fish and can trigger hard-to-reverse ecosystem shifts.