Valentina D'Efilippo

Valentina D'Efilippo is an award-winning data visualizer and illustrator. She is the co-creator of The Infographic History of the World which has been sold in 9 languages, she presented a TedX talk on Data Design in 2021, and she leads workshops for students and professionals, including masterclasses with The Guardian about visual storytelling with data. This is her first children's book.

Andrew Pettie is a UK-based writer, editor, and journalist who has contributed to The Times, Sunday Times and The Daily Telegraph, where he was Head of Culture. Andrew is the author of Listified! (published by Britannica Books), and the editor of the Britannica Magazine.

Conrad Quilty-Harper is a journalist at Bloomberg News in London, UK. He previously worked at New Scientist, British GQ, the Daily Mirror, and The Daily Telegraph, often using data and infographics to tell stories. He plays the trombone, likes airplanes, and his favorite type of graph is the sankey diagram.

Britannica Group is a global education leader with over 250 years of dedication to seeking out facts and providing insight into the mysteries of the universe. Britannica's mission to inspire curiosity and the joy of learning helps build the world's future thinkers and innovators.