Sustainability is a big word, but it is an important one. It means that the things that we enjoy...should be available for the people of the future. Just as the children in the picture in the front of this book wanted to plant a tree for us to enjoy 100 years later, we must plant trees for the people who will live here 100 years from now. Alcoa is a large company that makes many things for people to use. But one of the most important things that Alcoa can do is to help make the world sustainable...so that you, your children and your children's children can live in a world of beauty and abundance with all the resources that are needed.

Trees are the wonderful example of sustainability. They serve us today, but they will also serve the people of the future. They are not our trees, but the trees of our grandchildren. Alcoa has a program called One Million Trees that provides trees for each employee each year. The employees and their families are encouraged to plant their trees in special places and to nurture them. This program will result in a forest of 1,000,000 trees throughout the world that help bind our employees with their families and with each other. As of December 2002 over 973,000 trees have been planted. 12,100 of them have been planted in the Pittsburgh area.

We hope this CD helps you know the trees of Pittsburgh better, and by knowing about them, we believe that you will care for them and respect the rights of the children of the future to have a beautiful world to live in.