I'm going to go on a very long walk - more or less 2000 miles. The reason I'm doing this is that I'm very worried about Global Warming and the bad things that can happen to the Planet Earth. I worry that life will be harder for all the children that are growing up now unless we grownups stop doing things that are bad for the world. Life will be harder for many animals too, and some of them are already becoming extinct.
One day in October of 2008 I realized that I wanted to do something really impressive to call attention to Global Warming. That's when I decided to take this long walk. I am dedicating this walk to all the grandchildren in the world. That includes YOU.
Tomorrow I will tell you where the walk will be, when it will start and about how long it will take.