We Have No Idea: A Guide to the Unknown Universe (Unabridged)
2017
Frequently Asked Questions about the Universe (Unabridged)
2021
Oliver's Great Big Universe (Oliver's Great Big Universe)
2023
Volcanoes Are Hot! (Oliver's Great Big Universe)
2024
Oliver's Great Big Universe: Evolution Changes Everything! (Oliver's Great Big Universe)
2025
Out of Your Mind: The Biggest Mysteries of the Human Brain (Unabridged)
2025