Many inferred developments from anthropological and fossil records, such as when humans started losing body hair based on when body lice differentiated (head lice, pubic lice). Gets into some racial weirdness, but still a good read
This covers so much ground: from movement of earliest plants and animals to man's travels in and out of Africa, to contemporary migration issues. There is a wealth of information covering worlds of knowledge. Picked this title up casually with little interest in it, but I could not put it down. For example, did you know humanity did not understand bird migration until radar was developed during World War II? It seems so obvious to us today. Highly recommend this captivating book.