A lovely thing by lovely people for a lovely charity. (Miranda Hart)

Perfect for kids who ask 'Why?' (Dan Snow)

The whole family will be hooked. (Sunday Times Style magazine)

An invaluable spur to asking questions and thinking about answers. (The Guardian)

Certain to give you pause about much of what you thought you knew, or at the very least rekindle that childlike curiosity about and awe at the basic fabric of the world we live in. (Maria Popova Brainpickings.org)

After reading Big Questions... I was reminded of the limitless range of my own ignorance. The things most people don't know you could put in a book. And Faber have. (Telegraph)

Harris has assembled a roster of experts - some celebrities, some not, all eminent in their fields - to provide succinct, accurate replies to the sort of head-scratchers that parents and teachers regularly find themselves presented with by children of primary school age and often struggle to answer. it works a treat. (Financial Times)

An entertaining and enlightening read. (The Lady)