Can you make a homemade thermometer? Do rubber bands behave differently at different temperatures? What's needed to make your own cooler? The answers to these questions—and many more having to do with temperature—are found through experimentation in this title presented by Scientific American. Each project presents the scientific background of the concept explored and then offers clear step-by-step instructions to complete the experiment or activity. Most projects have additional questions or ideas that allow readers to expand the project, including some that are a great way to start a science fair project.