Let's celebrate our differences! This fun book teaches you to count from 0 to 7.5 billion, but also to do so much more. Follow the characters' stories through the book and see how their lives collide with those of others. There are a lot of secrets to be discovered for the sharp-eyed! You'll see that everyone is different, everyone has their own life, and that - most importantly - everybody counts. At the end, a spotting section allows you to go back and have even more fun.