Read the text again and answer the questions:
1. Who suffers most from worsening air pollution ?
2. What sort of things do people do to avoid polluted air ?
3. How does a Smog Free Tower work ?
4. What sort of things can you make with smog particles.
5. What motivated Roosegaarde to design the Smog Free Tower ?
6. How does Roosengaarde's project develop ?