Over in the UK, the Guardian has published a list of the 100 greatest non-fiction books of all time. We’re talking way back to 400 BC here (The Histories by Herodotus). Not only does the list span all time, it also spans all genres –including math, travel, religion, and, yes, journalism. Check out the list online, as well as the growing list of comments of what people thought the paper missed. How many books on the list have you read?