Christopher Lloyd is a world history author, educator and lecturer. His books include Absolutely Everything! (What on Earth Books 2018) and the bestselling Britannica All New Kids' Encyclopedia (Britannica Books 2020). It's Up to Us has been written in collaboration with His Majesty's Sustainable Market Initiative and The Prince's Foundation, of which His Majesty is President, which provides holistic solutions to the challenges facing the world today and champions a sustainable approach to how we live our lives and build our communities. Profits from the sale of this book will be used to support the Prince's Foundation's charitable work.

Throughout his adult life, His Majesty King Charles III has dedicated himself to charitable causes, including environmental protection and sustainable development. He launched Terra Carta, his vision for a new contract between nature, people and planet, in early 2021.

Thirty-three highly talented children's artists and illustrators are featured in the book, including: Mehrdokht Amini (UK), Harmony Becker (USA), Wesley Bedrosian (USA), Sally Caulwell (Republic of Ireland), Raúl Colón (USA), Reza Dalvand (Iran), Owen Davey (UK), Sally Deng (USA), Paolo Domeniconi (Italy), Leah Marie Dorion (Canada), Blak Douglas (Australia), Barry Falls (Northern Ireland), Victoria Fomina (Russia), Gunnella (Iceland), Nick Hayes (UK), Kumiko Horibe (Japan), Isol (Argentina), Su Jung Jang (UK), Murat Kalkavan (Turkey), Gwen Keraval (France), Ye Luying (China), Estelí Meza (Mexico), Poonam Mistry (UK), Rutu Modan (Israel), Musa Omusi (Kenya), Nick Sharratt (UK), Peter Sís (USA), Sydney Smith (Canada), Vanina Starkoff (Brazil), Fotini Tikkou (Greece), Luisa Uribe (Colombia), Stuart Armstrong (USA) and Phùng Nguyên Quang & Huỳnh Kim Liên (Vietnam). Each spread is illustrated by a different artist in the spirit of Terra Carta, to celebrate a global diversity of style, background, race and ethnicity.