This chapter shares a list of titles of projects at a national science fair to give students some indication of the range of topics. A good way to explore a topic is to discuss it with a friend. When exploring a topic, remember it’s okay to choose the same topic as another student or scientist. Today, there are many scientists studying the same topics such as cancer and environmental concerns. But all scientists do different experiments—even if they are studying the same topic—because they are interested in different aspects of a particular problem. They also ask different questions.