Explanations of key STEM (engineering) topics in an original, highly entertaining way through comicaltrial and error scenarios. In this book find out what forces are at work on a rollercoaster ride. What stops you from falling off? How do you loop the loop? What does it take to build a rollercoaster? This series looks at how things work such as how a plane can fly or a boat can float through the comical endeavours of an inventor who tries to replicate what he sees without knowing the science, with hilarious results. We discover what went wrong and why through the scientific explanations that follow each attempt, making tricky concepts accessible and entertaining in equal measure. Perfect for children aged 7+