A great day in New York

Last year, in New York, there was a special day about environment. Some participants, from teenagers to ald people, picked up all the rubbish that there was in the long streets of this city. As you know, New York is very big, so there was many pollution and so much rubbish. Then, they didn't use cars because they wanted to be more ecological. At the end of the day some parks were cleaned, there was less traffic in the estreets, the air was pure and the most important thing: They got that New York was a green city per one day.