Valentina D’Efilippo is an award-winning designer, author, lecturer and occasional speaker. Stylistically adaptable, she specialises in working with complex data to create engaging and artistic visualisations. She has contributed to outstanding campaigns for global brands including Siemens, the UN and Google. In 2013 she published The Infographic History of the World. She also regularly runs a Masterclass on Data Storytelling at The Guardian.