That means that the engines they made had to be changed. Some people had to learn new jobs. Other people had to change the way they work. The emissions law in our country led to changes in the way business was conducted in other countries. It changed the global community.
Kids working together can make big changes.
Make a commitment to make it happen. Learn about recycling and what the school board says can be done in your school. Teach your friends why recycling is good. Show them how recycling is done. Get them to make a commitment to help set up recycling in your school cafeteria.