Reads like a book or hangs on a wall! 13.7 billion years beautifully illustrated on a unique 2.3 metre-long timeline...The What on Earth? Wallbook of Big History features more than 1000 illustrations depicting millions of years of evolution; the rise and fall of civilizations; 100 of the top battles and; on the reverse; the story of planet; life and people from the Big Bang to the present day....an exhilarating journey through the past.