When you turn the key and press the starter button the motorbike should start. But like so many things in life it doesn’t! Join Tom and Sissy in their quest to make their grandfather’s motorbike work again, and along the way discover the science of the machine and what makes it work.

WHY THINGS DON'T WORK is a series of books that present a comic story to show how machines work— from the creator of 

‘Brain Surgery for Beginners’, ‘531/2 Things That Changed the World’ and ‘Answers to Questions You Always Wanted to Ask’.