The more technology changes and improves machines, the more questions budding mechanical engineers have. Can you 3D print a 3D printer? Can light slice through steel? These are just two of the many queries addressed in this entertaining and enlightening book. Presented in an engaging question-and-answer format, the motivating text draws readers into the fascinating world of machines. An appealing design is complemented by colorful photographs and funny cartoons, helping to make STEM facts accessible and fun.