Christopher Lloyd (born 1 April 1968) is a historian, educationalist and author on big history. He is the author of What on Earth Happened: The Complete Story of the Planet (Bloomsbury, 2008), which has sold 500,000 copies. Lloyd is a advocate of connected learning. In collaboration with Beckenham-based illustrator Andy Forshaw, Lloyd has established a format for telling giant narratives to young people by using illustrative timelines called Wallbooks, which present a broader view of world history and visualise connections between the past and the present day.