Long TextExercise 40 of 83

In today's world protecting the environment and sustainability are very important issues. Cities and councils throughout the world are working hard to improve the current situation and sustainability will be an important factor in all town and city development in the future. One city which has always had the…

• Why is Curitiba known as the ecological capital of Brazil?
• What does the author mean in line 13 when it says the residents 'came up with a revolutionary idea'?