Author of Amazing Islands and Ocean
Author of Antarctica and Galápagos Islands
Author of Marvelous Machines and Marvelous Body
Author of How to Teach Grown-Ups About Pluto
Author of Amazing Treasures
Illustrator of ZOOM Farm Adventure
Illustrator of FACTopia! and Return to FACTopia!
Illustrator of Listified! and the Marvelous Series
Author of Earth is Big
Art Designer and Illustrator of the Wallbooks and What on Earth Happened?
Illustrator of Monsters
Illustrator of ZOOM: Space and Ocean Adventures