213 questions. One for roughly every bone you might have.

A question-and-answer book fact-checked by experts from across the University of Cambridge, ranging over science, technology, engineering, evolution, zoology and social history. It opens by pointing out that nobody has a fixed number of bones — most babies start with around 300 and end up somewhere between 206 and 213.

We stock it because "why" is the most expensive question in parenting, and this answers 213 of them properly.

• 213 questions answered
• Fact-checked by experts from across the University of Cambridge
• Covers science, engineering, evolution, zoology and social history
• Published by Nosy Crow