Catherine Barr is a leading author on science and nature topics for young children, specialising in presenting them in new and exciting ways. She worked for Greenpeace and London's Natural History Museum before becoming a full-time writer. Her previous books for Otter-Barry are Red Alert: 15 Endangered Animals Fighting to Survive; Invisible Nature: A Secret World Beyond Our Senses (winner of the Teach Primary science book prize), both with Anne Wilson; and Wildlife Crossings: Protecting Animal Pathways Around the World, with Christiane Engel. Catherine is an inspiring speaker, who particularly enjoys visiting schools to share her books. Her website is catherinebarrbooks.me, and she lives near Hay-on-Wye.Christiane Engel grew up in Germany. She has a BA in children's art and an MA in Children's Illustration. Working on information books, she seeks to present important topics to young children in an engaging, respectful way. She works with soft pencil, acrylics, watercolour and digital media. Her most recent book is Wildlife Crossings (Otter-Barry Books, 2024) with Catherine Barr. Christiane lives in Kent, England.

"This is an exceptional non-fiction book filled with facts about water around the world and how we can take action to use water wisely. Inspirational and beautifully illustrated."