Dave and Toph Eggers have been moonlighting for many years as the not-so-secret authors of the Haggis-on-Whey series of faux-scientific texts for children. In each book, an elderly scientist, Dr. Doris Haggis-on-Whey, takes on a subject and rearranges all previous assumptions. She is joined by her husband Benny, who is pretty much useless. All of the books look to the naked eye like '50s-era grade school reference books, but inside they're strange, deranged, and hilarious. This fifth volume is actually two books in one, as Dr. Doris, due to space constraints, is forced to explain both the concept of children — a species she doesn't trust for a second — and the tundra, in one book.