One of the main ways scientists search for answers to their questions is by conducting experiments. Readers will find out how scientists plan and carry out experiments in a wide range of strange, sometimes dangerous conditions. They will also get a close look at some of history's most unbelievable experiments, from John Paul Stapp's tests of safety harnesses while traveling at the speed of sound to Edward Jenner's daring experiments with the smallpox vaccine. This well-written book will help readers identify key facts about science topics. The engaging content allows readers to draw connections between historical events and scientific ideas.